检索结果-南通市图书馆

Multidentate anchoring through additive engineering for highly efficient Sb_(2)S_(3)planar thin film solar cells

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第30期89卷 36-44页

作者： Jian Han Xingyu Pu Hui Zhou Qi Cao Shuangjie Wang Jiabao Yang Junsong Zhao Xuanhua Li State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Northwestern Polytechnical University-Queen Marry University of London(NPU-QMUL)Joint Research Institute of Advanced Materials and Structures(JRI-AMAS)Xi’an 710072China

Sb_(2)S_(3)is a promising candidate for the flexible solar cells or the top subcells in tandem solar cells due to its wide-bandgap,less toxic,acceptable cost and progressive power conversion efficiency(PCE).However,the poor quality and high trap states of Sb_(2)S_(3)films limit the device performance further ***,we adopt a multidentate ionic liquid,tetramethylammonium hexafluorophosphate([TMA][PF_(6)])as a novel additive to address this *** octahedral[PF_(6)]~-contains six different oriented fluorine atoms with the lone pair electrons,which could coordinate with Sb atoms due to the multidentate ***,the high-quality Sb_(2)S_(3)film with low trap states has been ***,the Fermi level of the Sb_(2)S_(3)film has been upshifted,thereby showing an effective charge *** a result,all photovoltaic parameters of the optimized Sb_(2)S_(3)devices are obviously enhanced,boosting the final PCE from 4.43(control device)to 6.83%.Our study about the multidentate anchoring is manifested to be an effective method to enhance the Sb_(2)S_(3)device performance.

关键词： Sb_(2)S_(3) Solar cells additive engineering Multidentate anchoring Passivation

Leflunomide: A versatile additive for defect reduction, enhanced optoelectronic properties and environmental stability of perovskite films

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第4期17卷 2628-2637页

作者： Dingyue Sun Ming Peng Taijin Wang Longju Yi Shizuo Zhang Feng Liu Gary J.Cheng The Institute of Technological Sciences Wuhan UniversityWuhan 430072China School of Power and Mechanical engineering Wuhan UniversityWuhan 430072China School of Industrial engineering Purdue UniversityWest LafayetteIN 47906USA

The development of perovskite photoelectric devices with excellent performance is largely dependent on the defects in the perovskite *** address this issue,a specific drug,leflunomide(LF,C_(12)H_(9)F_(3)N_(2)O_(2)),was incorporated into the perovskite to reduce defects and improve its photoelectric *** is believed that the C=O bond on LF molecule can interact with the uncoordinated Pb2+of the perovskite,thereby reducing non-radiative *** novel approach of incorporating LF into perovskite films has the potential to revolutionize the development of high-performance perovskite photoelectric *** trifluoromethyl functional(–CF_(3))group on LF can form a protective layer on the surface of the perovskite film,shielding it from water ***,LF can be utilized to alter the nucleation position of perovskite,thus minimizing the number of defects and optimizing the film ***,the LF-doped perovskite film displays low trap density and high photoelectric *** LF-doped perovskite film showed a trap density of 8.28×10^(11),which is notably lower than the 2.04×10^(12) of the perovskite film without *** responsivity and detectivity of the LF-doped perovskite photodetector were 0.771 A/W and 2.81×10^(11) Jones,respectively,which are much higher than the 0.23 A/W and 1.06×10^(10) Jones of the LF-undoped perovskite ***,the LF-doped photodetector maintained an initial photocurrent of 86%after 30 days of storage in air,indicating drastically increased environmental *** strongly suggests that LF is an effective additive for perovskites utilized in optoelectronic devices with high performance.

关键词： leflunomide additive engineering defect passivation perovskite

Effect of Lewis acid-base additive on lead-free Cs_(2)SnI_(6) thin film prepared by direct solution coating process

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第8期33卷 444-451页

作者： Saqib Nawaz Khan 王燕钟李祥梁会力杜小龙梅增霞 Institute of Physics Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China University of Chinese Academy of Sciences Beijing 100049China Beijing Hairou Laboratory Beijing 101400China School of Physics Beijing Institute of TechnologyBeijing 100081China

Inorganic Cs_(2)SnI_(6) perovskite has exhibited substantial potential for light harvesting due to its exceptional optoelectronic properties and remarkable stability in ambient *** charge transport characteristics within perovskite films are subject to modulation by various factors,including crystalline orientation,morphology,and crystalline *** preferred crystalline orientation and film morphology via a solution-based process is challenging for Cs_(2)SnI_(6) *** this work,we employed thiourea as an additive to optimize crystal orientation,enhance film morphology,promote crystallization,and achieve phase *** lowers the surface energy of the(222)plane along the(111)direction,confirmed by x-ray diffraction,x-ray photoelectron spectroscopy,ultraviolet photoelectron spectroscopy studies,and density functional theory *** thiourea concentration enables a bandgap tuning of Cs_(2)SnI_(6) from 1.52 eV to1.07 *** approach provides a novel method for utilizing Cs_(2)SnI_(6) films in high-performance optoelectronic devices.

关键词： Cs_(2)SnI_(6) crystalline orientation Lewis acid-case additive engineering bandgap engineering

Benzotriazole derivative inhibits nonradiative recombination and improves the UV-stability of inverted MAPbI_(3) perovskite solar cells

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第2期31卷 592-599页

作者： Xiaoyu Deng Zhiyuan Cao Chengbo Li Shurong Wang Feng Hao School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina

Suppressing the nonradiative recombination in the bulk and surface of perovskite film is highly desired to improve the power conversion efficiency(PCE)and stability of halide perovskite solar cells(PSCs).In this study,a benzotriazole derivative(6-chloro-1-hydroxybenzotriazole,Cl-HOBT)is applied to improve the crystallinity and reduce the trap density of methylammonium lead iodide(MAPbI3)perovskite ***,incorporation of Cl-HOBT elongates the photoluminescence carrier lifetime and chargerecombination lifetime,implying the trap-assisted nonradiative recombination is greatly ***,the improved energy level alignment and enhanced built-in potential are conducive to the charge carrier separation and transfer process with ***,a PCE of 20.27%and an open-circuit voltage(Voc)of 1.09 V are achieved for the inverted MAPbI3 PSCs,along with an 85%maintaining of the initial PCE under stored at relative humidity of 20%for 500 ***,the existence of Cl-HOBT could inhibit the formation of Pb0 defect under prolonged UV illumination to retard the degradation of perovskite *** is believed that this study paves a novel path for the realization of highefficiency PSCs with UV-stability.

关键词： additive engineering Charge recombination Carrier lifetime Defect Mobility

Unravel the Charge-Carrier Dynamics in Simple Dimethyl Oxalate-Treated Perovskite Solar Cells with Efficiency Exceeding 22%

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2023年第5期6卷 219-227页

作者： Rongjun Zhao Tai Wu Rongshan Zhuang Yong Hua Yude Wang Yunnan Key Laboratory for Micro/Nano Materials&Technology School of Materials and EnergyYunnan UniversityKunming 650504China Key Lab of Quantum Information of Yunnan Province Yunnan UniversityKunming 650504China

Understanding the effect of additive on the interfacial charge-carrier transfer dynamics is very crucial to obtaining highly efficient perovskite solar cells(PSCs).Herein,we designed a simple additive,dimethyl oxalate(DO),functioning as an effective defect passivator of perovskite grain boundaries via the coordination interaction between the carbonyl(C=O)and the exposed Pb^(2+).The modification with DO produces pinhole-free and compact perovskite films,enhancing the transportation capability of *** a consequence,the DO-treated PSCs exhibited a power conversion efficiency(PCE)of 22.19%,which is significantly higher than that of the control device without additive(19.58%).More importantly,detailed transient absorption characterization reveals that the use of additive can decrease the hot-carrier cooling dynamics,improve the carrier transfer,and eliminate nonradiative recombination in *** present work provides a profound understanding the additives effect on the carrier dynamics in PSCs toward the Shockley-Queisser limit.

关键词： additive engineering carrier dynamics defect passivation Perovskite solar cell

Stable and highly efficient perovskite solar cells:Doping hydrophobic fluoride into hole transport material PTAA

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2022年第5期15卷 4431-4438页

作者： Chao Yu Buyue Zhang Chen Chen Jintao Wang Jian Zhang Ping Chen Chuannan Li Yu Duan State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China College of Science Changchun University of Science and TechnologyChangchun 130012China

Perovskite solar cells(PSCs)have rapidly developed in the past few years,with a record efficiency exceeding 25%.However,the long-term stability of PSCs remains a challenge and limits their practical *** high-performance PSCs have an n-i-p device architecture employing 4-tert-butylpyridine(t-BP)and bis(trifluoromethane)sulfonimide lithium salt(Li-TFSI)as bi-dopants for the hole-transporting layer(HTL).However,the hygroscopicity of Li-TFSI and low boiling point of t-BP negatively impact the moisture stability of these PSC ***,we report the use of the fluorine-containing hydrophobic compound tris(pentafluorophenyl)phosphine(35FP)as a dopant for poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine](PTAA).With better hydrophobicity and stability than undoped PTAA,a PSC device containing 35FP-doped PTAA demonstrated improved charge transport properties and reduced trap density,leading to a significant enhancement in *** addition,the long-term stability of a 35FP-doped PTAA PSC under air exposure without encapsulation was demonstrated,with 80%of the initial device efficiency maintained for 1,000 *** work provides a new approach for the fabrication of efficient and stable PSCs to explore hydrophobic dopants as a substitute for hydrophilic Li-TFSI/t-BP.

关键词： perovskite solar cells additive engineering long-term stability hydrophobic dopant

Recent progress of inverted organic-inorganic halide perovskite solar cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第4期79卷 168-191页

作者： Dongyang Li Yulan Huang Zhiwei Ren Abbas Amini Aleksandra B.Djurišic Chun Cheng Gang Li Department of Electronic and Information engineering Research Institute for Smart Energy(RISE) The Hong Kong Polytechnic UniversityHong Kong 999077China Department of Materials Science and engineering Southern University of Science and TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of Energy Materials for Electric Power Southern University of Science and TechnologyShenzhen 518055GuangdongChina Department of Physics The University of Hong KongHong Kong 999077China Centre for Infrastructure engineering Western Sydney UniversityPenrith 2751NSWAustralia

In recent years,inverted perovskite solar cells(IPSCs)have attracted significant attention due to their low-temperature and cost-effective fabrication processes,hysteresis-free properties,excellent stability,and wide *** efficiency gap between IPSCs and regular structures has shrunk to less than 1%.Over the past few years,IPSC research has mainly focused on optimizing power conversion efficiency to accelerate the development of *** review provides an overview of recent improvements in the efficiency of IPSCs,including interface engineering and novel film production techniques to overcome critical *** and integrated applications of IPSCs are also ***,prospects for further development of IPSCs are discussed,including the development of new materials,methods,and device structures for novel IPSCs to meet the requirements of commercialization.

关键词： Inverted perovskite solar cells Interface engineering additive engineering Tandem solar cells Integrated solar cells

Antioxidant induced bulk passivation for efficient and stable hole transport layer-free carbon electrode perovskite solar cells

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2023年第6期34卷 219-224页

作者： Yetai Cheng Qingbo Wei Nannan Wang Zhangwen Ye Yanbin Zhao Qiongyao Wang Depeng Chu Lingxing Zan Feng Fu Yucheng Liu Key Laboratory of Chemical Reaction engineering of Shaanxi Province College of Chemistry&Chemical EngineeringYan’an UniversityYan’an 716000China Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy TechnologyInstitute for Advanced Energy MaterialsSchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710062China

Defect passivation is one of the important strategies to improve the efficiency and stability of perovskite solar *** this work,2,6-di-tert-butyl-4-methylphenol(BHT)as antioxidant was introduced into the perovskite precursor solution to improve the quality of the prepared perovskite films,so that these films performed a larger and uniform grain ***,the-OH functional group in BHT interacts with I-,thus reducing the density of defect states and inhibiting the non-radiative *** presence of hydrophobic groups in BHT protects the film from moisture erosion and improves the long-term stability of PSCs *** maximum photoelectric conversion efficiency of the constructed ITO/SnO_(2)/BHTMAPbI_(3)/Carbon device is 16.88%,and the unpackaged cell maintains the initial efficiency of 99.3%after698 h of storage under the environmental condition of 30%*** work provides an efficient approach to improve the performance of printable hole transport layer-free carbon electrode perovskite solar cells.

关键词： Perovskite solar cells additive engineering Defect passivation Long-term stability Carbon electrode

Multifunctional anchoring of O-ligands for high-performance and stable inverted perovskite solar cells

在线全文

学校读者我要写书评

暂无评论

InfoMat 2023年第2期5卷 34-44页

作者： Lisha Xie Xuhong Zhao Jianwei Wang Jun Li Chang Liu Shurong Wang Qinye Bao Mengjin Yang Xiaobin Niu Feng Hao Ziyi Ge Ningbo Institute of Materials Technology and engineering Chinese Academy of SciencesNingboPeople's Republic of China School of Materials and Energy University of Electronic Science and Technology of ChinaChengduPeople's Republic of China Center of Materials Science and Optoelectronics engineering University of Chinese Academy of SciencesBeijingPeople's Republic of China School of Physics and Electronic Science East China Normal UniversityShanghaiPeople's Republic of China

Functional additives have recently been regarded as emerging candidates to improve the performance and stability of perovskite solar cells(PSCs).Herein,nicotinamide(N),2-chloronicotinamide(2Cl),and 6-chloronicotinamide(6Cl)were employed as O-ligands to facilitate the deposition of MAPbI_(3)(MA=methylammonium)and MA-free FA_(0.88)Cs_(0.12)PbI_(2.64)Br_(0.36)(FA=formamidinium)perovskite films by multifunctional *** density functional theory(DFT)calculations and ultraviolet photoelectron spectroscopy(UPS)measurements,it is identified that the highest occupied molecular orbital(HOMO)level for additive modified MAPbI_(3)perovskite could reduce the voltage deficit for hole ***,due to the most favorable charge distribution and significant improvements in charge mobility and defect passivation,the power conversion efficiency(PCE)of 2Cl-MAPbI_(3)PSCs was significantly improved from 19.32%to 21.12%.More importantly,the two-dimensional grazing-incidence wide-angle X-ray scattering(GIWAXS)analysis showed that PbI_(2) defects were effectively suppressed and femtosecond transient absorption(TA)spectroscopy demonstrated that the trap-assisted recombination at grain boundaries was effectively inhibited in the 2Cl-MA-free *** a result,the thermally stable 2Cl-MA-free PSCs achieved a remarkable PCE of 23.13%with an open-circuit voltage(V_(oc))of 1.164 V and an ultrahigh fill factor(FF)of 85.7%.Our work offers a practical strategy for further commercializing stable and efficient PSCs.

关键词： additive engineering carrier non-radiative recombination defects passivation formamidinecesium inverted perovskite solar cells