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The prognostic significance of percentage of tumour involvement according to disease risk group in men treated with radical prostatectomy

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Asian Journal of Andrology 2011年第6期13卷 828-832页

作者： Jong Jin Oh sang cheol lee Chang Wook Jeong cheol Yong Yoon Seong Jin Jeong Sung Kyu Hong Seok-Soo Byun Yoon Kwan Rho Gheeyoung Choe sang Eun lee Department of Urology Seoul National University Bundang Hospital Seongnam Kyunggi-do 463-707 Korea Department of Pathology Seoul National University Bundang Hospital Seongnam Kyunggi-do 463-707 Korea

We investigated the prognostic significance of percentage of tumour involvement （PTI） according to the clinicopathological features of prostate cancer among patients who underwent radical prostatectomy （RP）. A retrospective study of 534 patients who underwent RP between September 2003 and March 2008 without any neoadjuvant or adjuvant therapy was performed. The associations of PTI with various clinicopathological features and biochemical recurrence-free survival were examined via uni- and multivariate analyses. The predictive accuracy of the multivariate model was assessed with a receiver operating characteristics-derived area under the curve. PTI was demonstrated to be significantly associated with preoperative prostate-specific antigen （PSA） level （P=0.001）, pathological Gleason score （P〈0.001）, extraprostatic tumour extension （P〈0.001）, seminal vesicle invasion （P〈0.001） and positive surgical margin （P〈0.001） in univariate analyses. When patients were stratified into disease risk groups, PTI was an independent predictor of biochemical recurrence-free survival in multivariate analysis only among the low-risk group （P=0.033） but not the intermediate- （P=0.287） or the high-risk groups （P=0.828）. The addition of the PTI did not significantly increase the accuracy of the multivariate model devised for the prediction of biochemical recurrence-free survival among both total patients （P=-0.459） and the low-risk group （P=0.268）, respectively. In conclusion, although PTI appeared to be a more significant prognostic factor among patients with low-risk disease than among those with higher risk diseases, overall, the PTI may not provide additional prognostic information beyond what can already be obtained via established prognostic factors.

关键词： biochemical recurrence-free survival percentage of tumour involvement prognosis prostate cancer prostatectomy

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Curative resection of leiomyosarcoma of the descending colon with metachronous liver metastasis: A case report

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World Journal of Gastrointestinal Surgery 2023年第5期15卷 992-999页

作者： Soo-Hyeon lee sang-Ho Bae sang-cheol lee Tae-Sung Ahn Zisun Kim Hae-Il Jung Department of Surgery Soonchunhyang University Cheonan HospitalCheonan 31151ChungnamSouth Korea Department of Internal Medicine Soonchunhyang University Cheonan HospitalCheonan 31151ChungnamSouth Korea Department of Surgery Soonchunhyang University Bucheon HospitalBucheon 14584GyeonggiSouth Korea

BACKGROUND Leiomyosarcoma(LMS)has a poor prognosis and rarely originates from the *** resection is possible,surgery is the first treatment most commonly ***,no standard treatment exists for hepatic metastasis of LMS;although,several treatments,such as chemotherapy,radiotherapy,and surgery,have been ***,the management of liver metastases remains *** SUMMARY We present a rare case of metachronous liver metastasis in a patient with LMS originating from the descending colon.A 38-year-old man initially reported abdominal pain and diarrhea over the previous two *** revealed a 4-cm diameter mass in the descending colon,40 cm from the anal *** tomography revealed intussusception of the descending colon due to the 4-cm *** patient underwent a left *** analysis of the tumor revealed that it was positive for smooth muscle actin and desmin,and negative for cluster of differentiation 34(CD34),CD117,and discovered on gastrointestinal stromal tumor(GIST)-1,which are characteristic of gastrointestinal LMS.A single liver metastasis developed 11 mo postoperatively;the patient subsequently underwent curative resection *** patient remained disease-free after six cycles of adjuvant chemotherapy(doxorubicin and ifosfamide),and 40 and 52 mo after liver resection and primary surgery,*** cases were obtained from a search of Embase,PubMed,MEDLINE,and Google *** Early diagnosis and surgical resection may be the only potential curative options for liver metastasis of gastrointestinal LMS.

关键词： Leiomyosarcoma Colon Liver metastasis Surgical resection Treatment Case report

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Attenuated FOLFIRINOX in the salvage treatment of gemcitabine-refractory advanced pancreatic cancer: a phase II study

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Cancer Communications 2018年第1期38卷 344-351页

作者： Jung Hoon Kim sang-cheol lee Sung Yong Oh Seo-Young Song Namsu lee Eun Mi Nam Soonil lee In Gyu Hwang Hyo Rak lee Kyu Taek lee sang-Byung Bae Han Jo Kim Joung Soon Jang Do Hyoung Lim Hyun Woo lee Seok Yun Kang Jung Hun Kang Department of Internal Medicine Institute of Health SciencesGyeongsang National University15 Jinju-daero 816beon-gilJinju 52727Republic of Korea Divsion of Hematology and Oncology Department of Internal MedicineSoonchunhyang University Hospital CheonanCheonan 31151Republic of Korea Department of Internal Medicine Dong-A University HospitalBusan 49201Republic of Korea Department of Internal Medicine Kangwon National University School of MedicineChuncheon 24289Republic of Korea Divsion of Hematology and Oncology Department of Internal MedicineSoonchunhyang University Hospital SeoulSeoul 04401Republic of Korea Department of Internal Medicine Ewha Womans UniversityCollege of MedicineSeoul 07985Republic of Korea Department of Internal Medicine Dankook University HospitalCheonan 31116Republic of Korea Department of Internal Medicine Chung-Ang UniversityCollege of MedicineSeoul 06973Republic of Korea Division of Hematology and Medical Oncology Department of Internal MedicineKorea Cancer HospitalSeoul 01812Republic of Korea Department of Hematology-Oncology Ajou University HospitalSuwon 16499Republic of Korea

Background:Combination therapy with oxaliplatin,irinotecan,fluorouracil,and leucovorin(FOLFIRINOX)chemotherapy drastically improves survival of advanced pancreatic cancer ***,the efficacy of FOLFIRINOX as a second-line treatment after gemcitabine failure has not been tested *** investigated the feasibility and safety of attenuated FOLFIRINOX in patients with gemcitabine-refractory advanced pancreatic ***:A multicenter phase II prospective open-label,single-arm study was conducted at 14 *** with histologically proven invasive ductal pancreatic adenocarcinoma,a measurable or evaluable lesion,Eastern Cooperative Oncology Group performance status 0 or 1,adequate organ function,and aged 19 years or older were *** FOLFIRINOX consisted of oxaliplatin 65 mg/m2,irinotecan 135 mg/m2,and leucovorin 400 mg/m2 injected intravenously on day 1 and 5-fluorouracil 2000 mg/m2 continuously infused intravenously over 46 h on days 1-2,repeated every 2 *** primary endpoint was progression-free survival from the initiation of *** endpoints were the objective response rate,disease control rate,overall survival,safety,and *** estimated overall survival and progression-free survival using the Kaplan-Meier ***:We enrolled 39 patients from 14 *** objective response rate was 10.3%,while the disease control rate was 64.1%.The 6-month and 1-year overall survival rates were 59.0%and 15.4%,*** progression-free survival and overall survival were 3.8 months(95%confidence interval[CI]1.5-6.0 months)and 8.5 months(95%CI 5.6-11.4 months),*** 3 or 4 adverse events were neutropenia(41.0%),nausea(10.3%),anorexia(10.3%),anemia(7.7%),mucositis(7.7%),pneumonia/pleural effusion(5.1%),and fatigue(5.1%).One treatment-related death attributable to septic shock ***:Attenuated FOLFIRINOX may be promising as a second-line therapy for gemcitabin

关键词： Attenuated FOLFIRINOX Second-line Pancreatic cancer Gemcitabine

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Genetic variation of the PSCA gene(rs2294008) is not associated with the risk of prostate cancer

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The Journal of Biomedical Research 2017年第3期31卷 226-231页

作者： II-Seok lee Sung Pil Seo Yun Sok Ha Pildu Jeong Ho Won Kang Won Tae Kim Yong-June Kim Seok Joong Yun sang cheol lee Wun-Jae Kim Department of Urology Chungbuk National University College of Medicine Department of Urology School of MedicineKyungpook National University

Prostate stem cell antigen（PSCA） is a cell-membrane glycoprotein consisting of 123 amino acids and highly expressed in the prostate,but there have been few reports on the relationship between rs2294008 of PSCA and prostate cancer in the ***,we evaluated the association between rs2294008 and the risk of prostate cancer.A total of 240 prostate cancer patients and 306 controls（patients with benign prostatic hyperplasia） were *** analysis of rs2294008 of PSCA was performed using *** regression analysis was performed according to the genotype of PSCA *** found that CT and TT genotypes were associated with an insignificant risk of prostate cancer compared with the CC genotype（P= 0.627 and 0.397,respectively）.In addition,there was no significant difference in rs2294008 according to clinicopathological parameters,such as age,Gleason score,prostate-specific antigen（PSA）,stage,and metastasis in prostate cancer（P 〉 0.05 for each）.Age,Gleason score,PSA,pathologic stage,and metastasis did not modify the association between PSCA and the risk of prostate cancer（each P 〉 0.05 for each）.Taken together,the genetic polymorphism of PSCA rs2294008 was not associated with the risk of prostate *** results suggest that rs2294008 may not play a role in prostate carcinogenesis.

关键词： prostatic neoplasms polymorphism genetic risk prostate polymorphism single nucleotide

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Weekly docetaxel and gemcitabine in previously treated metastatic esophageal squamous cell carcinoma

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World Journal of Gastroenterology 2015年第14期21卷 4268-4274页

作者： Min-Young lee Ki Sun Jung Hae Su Kim Ji Yun lee Sung Hee Lim Moonjin Kim Hyun Ae Jung Sung Min Kim Jong Mu Sun Myung-Ju Ahn Jeeyun lee Se Hoon Park Seong Yoon Yi In Gyu Hwang sang-cheol lee Hee Kyung Ahn Do Hyoung Lim Soon Il lee Keon Woo Park Division of Hematology-Oncology Department of MedicineSamsung Medical CenterSungkyunkwan University School of Medicine Division of Hematology-Oncology Department of Internal MedicineInje University Ilsan-Paik Hospital Division of Hematology-Oncology Department of Internal MedicineChung-Ang University Hospital Division of Hematology-Oncology Department of Internal MedicineSoonchunhyang University Hospital Division of Hematology-Oncology Department of Internal MedicineGachon University Gil Hospital Division of Hematology-Oncology Department of Internal MedicineDankook University College of Medicine

AIM: To assess the efficacy and safety of weekly docetaxel plus a fixed-dose rate(FDR) of gemcitabine in metastatic esophageal squamous cell carcinoma(SCC).METHODS: A multi-center, open-label, prospective phase Ⅱ study was ***-three esophageal SCC patients with documented progression after fluoropyrimidine/platinum-based first-line chemotherapy were enrolled and treated with docetaxel 35 mg/m2 and gemcitabine 1000 mg/m2 iv at a FDR(10 mg/m2 per minute) on days 1 and *** was repeatedevery twenty-one days until disease progression, unacceptable toxicity, or consent *** primary endpoint was response rate(RR), and secondary endpoints were safety, progression-free survival(PFS) and overall survival(OS).RESULTS: Combination of weekly docetaxel and FDR gemcitabine was well tolerated: the most common treatment-related adverse events were anemia(97%), fatigue(64%) and neutropenia(55%).One patient with multiple lung and lymph node metastases died of respiratory failure after receiving four cycles of chemotherapy, and the possibility of drug-induced pneumonitis could not be completely *** control(objective response plus stable disease) in the ITT population was achieved in 88% of patients, and the overall RR was 30%(95%CI: 15%-46%).The median PFS and OS were 4.0(95%CI: 3.4-4.6) and 8.8 mo(95%CI: 7.8-9.8 mo), ***: A combination of weekly docetaxel and FDR gemcitabine showed promising antitumor activity and tolerability in previously treated, metastatic esophageal SCC.

关键词： Clinical trial Phase Ⅱ Chemotherapy Carcinoma,Esop

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减量FOLFIRINOX方案挽救性治疗吉西他滨抵抗的晚期胰腺癌:一项Ⅱ期研究

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癌症 2018年第8期37卷 327-335页

作者： Jung Hoon Kim sang-cheol lee Sung Yong Oh Seo-Young Song Namsu lee Eun Mi Nam Soonil lee In Gyu Hwang Hyo Rak lee Kyu Taek lee sang-Byung Bae Han Jo Kim Joung Soon Jang Do Hyoung Lim Hyun Woo lee Seok Yun Kang Jung Hun Kang Department of Internal Medicine Institute of Health SciencesGyeongsang National University Divsion of Hematology and Oncology Department of Internal MedicineSoonchunhyang University HospitalCheonan Department of Internal Medicine Dong-A University Hospital Department of Internal Medicine Kangwon National University School of Medicine Divsion of Hematology and Oncology Department of Internal MedicineSoonchunhyang University HospitalSeoul Department of Internal Medicine Ewha Womans UniversityCollege of Medicine Department of Internal Medicine Dankook University Hospital Department of Internal Medicine Chung-Ang UniversityCollege of Medicine Division of Hematology and Medical Oncology Department of Internal MedicineKorea Cancer Hospital Department of Hematology-Oncology Ajou University Hospital

背景与目的奥沙利铂、伊立替康、氟尿嘧啶和亚叶酸的联合化疗方案(FOLFIRINOX)极大提高了晚期胰腺癌患者的生存期。然而,FOLFIRINOX方案作为吉西他滨失败后二线治疗的疗效尚未进行前瞻性的检测。我们研究了减量FOLFIRINOX方案治疗吉西... 详细信息

背景与目的奥沙利铂、伊立替康、氟尿嘧啶和亚叶酸的联合化疗方案(FOLFIRINOX)极大提高了晚期胰腺癌患者的生存期。然而,FOLFIRINOX方案作为吉西他滨失败后二线治疗的疗效尚未进行前瞻性的检测。我们研究了减量FOLFIRINOX方案治疗吉西他滨抵抗的晚期胰腺癌患者的可行性和安全性。方法在14家医院进行了这一多中心II期前瞻、开放标签的单臂研究。经组织学确诊为胰腺浸润性导管腺癌、有可测量或可评价的病灶、东部肿瘤协作组体能状况评分0或1分、器官功能良好、年龄19岁或以上的患者符合入组条件。减量FOLFIRINOX方案的组成:奥沙利铂65 mg/m2、伊立替康135 mg/m2和亚叶酸400 mg/m2,第1天静脉注射;5?氟尿嘧啶2000 mg/m2,第1–2天持续静脉输注46 h;每2周重复。主要终点为FOLIFLIOX治疗起始后的无进展生存期。次要终点为客观缓解率、疾病控制率、总生存期、安全性和耐受性。采用Kaplan?Meier法评估了总生存期和无进展生存期。结果我们招募了来自14个中心的39例患者。客观缓解率为10.3%,疾病控制率为64.1%。6个月和1年总生存率分别为59.0%和15.4%。中位无进展生存期和总生存期分别为3.8个月[95%置信区间(confidence interval,CI)=1.5–6.0个月]和8.5个月(95%CI=5.6–11.4个月)。3或4级不良事件为中性粒细胞减少(41%)、恶心(10.3%)、食欲减退(10.3%)、贫血(7.7%)、黏膜炎(7.7%)、肺炎/胸膜融合(5.1%)和乏力(5.1%)。发生1例由感染性休克引起的治疗相关死亡。结论减量FOLFIRINOX方案有望作为二线方案治疗吉西他滨抵抗的胰腺癌。

关键词：减量FOLFIRINOX方案二线治疗胰腺癌吉西他滨

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Improvement in tensile strength of extruded Mg-5Bi alloy through addition of Sn and its underlying strengthening mechanisms

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Journal of Magnesium and Alloys 2022年第11期10卷 3100-3112页

作者： sang-cheol Jin Jae Won Cha Jeong Hun lee Taekyung lee sang-Ho Han Sung Hyuk Park School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566Republic of Korea Ulsan Regional Division Korea Institute of Industrial TechnologyUlsan 44413Republic of Korea School of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea Department of Materials Analysis Korea Institute of Materials ScienceChangwon 51508Republic of Korea

Through an investigation of the microstructure and mechanical properties of extruded Mg–5Bi–x Sn(BT5x, x = 0, 2, 4, and 6 wt%) alloys,this study demonstrates that the addition of Sn to an Mg–5Bi binary alloy significantly improves the tensile strength of the extruded *** the extruded alloys exhibit a typical basal fiber texture and a partially dynamically recrystallized(DRXed) microstructure consisting of fine DRXed grains and coarse un DRXed grains. As the Sn content increases from 0 wt% to 6 wt%, the average size of the DRXed grains decreases from 4.2 to 2.8 μm owing to the increase in the amount of precipitates via their grain-boundary pinning effect. The extruded B5 and BT52 alloys contain numerous Mg_(3)Bi_(2) precipitates, but their size and number density are smaller and higher, respectively, in the latter *** Mg_(2)Sn precipitates as well as Mg_(3)Bi_(2)precipitates are present in the extruded BT54 and BT56 alloys, and the number density of the Mg_(2)Sn precipitates is higher in the latter alloy because of its higher Sn content. The addition of 2 wt% Sn to the B5 alloy significantly improves the yield strength(YS) and ultimate tensile strength(UTS) of the extruded alloy—by 76 and 57 MPa, respectively. This drastic improvement is the combined outcome of enhanced grain-boundary hardening, precipitation hardening, and solid-solution hardening effects induced by the refined DRXed grains, numerous precipitates, and Sn solute atoms, respectively. The further addition of 2 wt% or 4 wt% Sn to the BT52 alloy leads to moderate increments in the YS and UTS of the extruded alloy. Specifically, each addition of 2 wt% Sn increases the YS and UTS by ~26 and ~20 MPa, respectively, which is attributed mainly to the additional precipitation hardening effect induced by the Mg_(2)Sn precipitates.

关键词： Mg-Bi-Sn alloy Extrusion Precipitation Microstructure Tensile property

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New separation algorithm for touching grain kernels based on contour segments and ellipse fitting

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第1期12卷 54-61页

作者： Lei YAN cheol-Woo PARK sang-Ryong lee Choon-Young lee School of Mechanical Engineering Kyungpook National University Daegu 702-701 Korea School of Technology Beijing Forestry University Beijing 100083 China

A new separation algorithm based on contour segments and ellipse fitting is proposed to separate the ellipse-like touching grain kernels in digital *** image is filtered and converted into a binary image *** the contour of touching grain kernels is extracted and divided into contour segments (CS) with the concave points on *** next step is to merge the contour segments,which is the main contribution of this *** distance measurement (DM) and deviation error measurement (DEM) are proposed to test whether the contour segments pertain to the same kernel or *** they pass the measurement and judgment,they are merged as a new *** with these newly merged contour segments,the ellipses are fitted as the representative ellipses for touching *** verify the proposed algorithm,six different kinds of Korean grains were *** results showed that the proposed method is efficient and accurate for the separation of the touching grain kernels.

关键词： Separation algorithm Touching grains Contour segments Ellipse fitting

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Effects of Sn addition on the microstructure and mechanical properties of extruded Mg-Bi binary alloy

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Journal of Magnesium and Alloys 2022年第3期10卷 920-931页

作者： sang-cheol Jin Jong Un lee Jongbin Go Hui Yu Sung Hyuk Park School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566South Korea Department of Materials Science and Engineering Kyoto UniversityYoshida-honmachiSakyo-kuKyoto606-8501Japan School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China

We investigated the effects of Sn addition on the microstructural characteristics and mechanical properties of an extruded Mg-Bi binary alloy by comparing Mg-5 Bi(B5)and Mg-5 Bi-4 Sn(BT54).Both the extruded alloys exhibit a partially recrystallized grain structure with a strong extrusion fiber texture and numerous Mg3Bi2 ***,the addition of Sn significantly decreases the average grain size of the extruded alloy from 123.9 to 75.2μ*** Sn solute atoms inhibit the activity of dislocation slip,which reduces the internal strain energy accumulated in the dynamically recrystallized(DRXed)grains during ***,this reduced strain energy leads to the decrease in the DRXed grain size owing to weakened grain growth during natural *** extruded BT54 alloy exhibits higher tensile strength and ductility than the extruded B5 *** improvement in the strength by the Sn addition is attributed to the combined effects of grain refinement,Sn solute atoms,and increased dislocation *** formation of{10-11}and{10-11}-{10-12}twins during tension is suppressed by the grain refinement,thereby improving the tensile elongation considerably.

关键词： Mg±Bi alloy Extrusion Dynamic recrystallization Microstructure Mechanical properties.

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High-efficiency single and tandem fullerene solar cells with asymmetric monofluorinated diketopyrrolopyrrole-based polymer

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Journal of Energy Chemistry 2022年第1期31卷 236-245,I0007页

作者： Shafket Rasool Quoc Viet Hoang Doan Van Vu Chang Eun Song Hang Ken lee sang Kyu lee Jong-cheol lee sang-Jin Moon Won Suk Shin Institute of Chemical Technology(KRICT) 141 Gajeong-roYuseongDaejeon 34114Republic of Korea Advanced Materials and Chemical Engineering University of Science and Technology(UST)217 CajeongroYuseongDaejeon 34113Republic of Korea Vietnam Standards and Quality Institute(VSQI) Directorate for StandardsMetrology and Quality(STAMEQ)No.8.Hoang Quoc VietCau GiayHanoiViet Nam

Design and synthesis of low bandgap(LBG) polymer donors is inevitably challenging and their processability from a non-halogenated solvent system remains a hurdle to overcome in the area of highperformance polymer solar cells(PSCs).Due to a high aggregation tendency of LBG polymers,especially diketopyrrolopyrrole(DPP)-based polymers coupled with bithiophenes in the polymer backbones,their widespread adoption in non-ha logena ted solvent-processed PSCs has been ***,a novel LBG DPP-based polymer,called PDPP4 T-1 F with asymmetric arrangement of fluorine atom,has been successfully synthesized and showed an outstanding power conversion efficiency(PCE) of 10.10% in a singlejunction fullerene-based ***,an impressive PCE of 13.21% has been achieved in a tandem device from a fully non-halogenated solvent system,which integrates a wide bandgap PDTBTBz-2 F polymer in the bottom cell and LBG PDPP4 T-1 F polymer in the top *** achieved efficiency is the highest value reported in the literature to date in fullerene-based tandem *** found that a uniformly distributed interpenetrating fibril network with nano-scale phase separation and anisotropy of the polymer backbone orientation for efficient charge transfer/transport and suppressed charge recombination in PDPP4 T-1 F-based PSCs led to outstanding PCEs in single and tandem-junction PSCs.

关键词： Low bandgap polymers Diketopyrrolopyrrole Tandem polymer solar cells Non-halogenated solvent Monofluoro-bithiophene

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