检索结果-南通市图书馆

第六届新型太阳能电池材料科学与技术学术研讨会

作者： Miao Zhang Fujun Zhang College of Science Beijing Jiaotong University

Efficient ternary polymer solar cells(PSCs) are prepared with PTB7-Th:CO8DFIC as host system and medium bandgap material BDTThIT-4F as the third component. According to Figure 1, the power conversion efficiency(PCE) of 11.47% or 9.25% are obtained for CO8DFIC or BDTThIT-4F based binary PSCs. The PCE of PSCs can be improved to 13.08% by incorporating 20 wt% BDTThIT-4F in acceptors, resulting from the simultaneously increased JSC of 24.88 mA cm, V of 0.721 V, and FF of 72.9%. As shown in Figure 1b, the absorption edge of ternary blend films can be tilted up by incorporating appropriate BDTThIT-4F, although the bandgap of BDTThIT-4F is wider than that of CO8DFIC. The tilted-up absorption edge results in the extended external quantum efficiency spectra of ternary PSCs, contributing to the markedly increased J of the optimized ternary PSCs. The tilted up absorption edge of blend films should be attributed to the variation of CO8DFIC molecular arrangement, which can be well demonstrated from the transient absorption(TA) and steady absorption spectra of blend films with different donors and acceptors. As presented in Figure 1c, a new ground state bleach(GSB) signal can be clearly observed in TA spectra of the optimized ternary blend films, which may be due to the varied CO8DFIC molecular energy levels. Meanwhile, the lifetimes on excited states are increased in the ternary blend films, which is beneficial to exciton dissociation for performance improvement. This work provides more insight into the underlying reasons of the third component on performance improvement of ternary PSCs.

关键词： Tilted up absorption edge ternary polymer solar cells non-fullerene acceptor

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Efficiency enhancement of P3HT:PCBM polymer solar cells using oligomers DH4T as the third component

引用

Science China Chemistry 2015年第7期58卷 1169-1175页

作者： Ping Fu Dong Yang Fujun Zhang Wei Yu Jian Zhang Can Li State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences and Dalian National Laboratory for Clean Energy Key Laboratory of Luminescence and Optical Information Ministry of Education University of Chinese Academy of Sciences

We assembled a ternary blend bulk heterojunction polymer solar cell(PSCs) containing P3HT(donor) and PC61BM(acceptor) incorporated with a small molecule oligomer, dihexyl-quaterthiophene(DH4T) as a third component. By optimizing the contents of DH4 T, we increased the power conversion efficiency of ternary P3HT:DH4T:PC61BM PSCs to 4.17% from 3.44% of binary P3HT:PC61BM PSCs under AM 1.5 G of 100 m W/cm2 intensity. The major improvement is from the increase of the short circuit current and fill factor that is due to the increased light absorption at short wavelength, the balanced charge carrier transportation and the enhanced hole evacuation by a DH4T-enriched layer at the anode interface. In this work, we demonstrated that the efficiency of the PSCs can be enhanced by using low-bandgap conjugated polymer and its oligomer as donors and fullerene derivatives as acceptors.

关键词： ternary polymer solar cells P3HT:PC61BM oligomer mobility balanced charge carrier transportation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Low-Cost and High-Performance polymer solar cells with Efficiency Insensitive to Active-Layer Thickness

引用

CCS Chemistry 2023年第12期5卷 2945-2955页

作者： Xiaolei Kong Jinyuan Zhang Lei Meng Chenkai Sun Xin Jiang Jianqi Zhang Can Zhu Guangpei Sun Jing Li Xiaojun Li Zhixiang Wei Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 School of Chemical Science University of Chinese Academy of SciencesBeijing 100049 College of Chemistry and Green Catalysis CenterZhengzhou UniversityZhengzhou 450001 CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190 Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190 Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123

The power conversion efficiency(PCE)of polymer solar cells(PSCs)has recently increased quickly,propelling PSCs closer to large-scale ***,several critical issues,such as the cost of materials and the sensitivity of the PCE to active-layer thickness,must be addressed before industrial application can be realized on a large ***,we fabricated a high-performance ternary PSC based on a low-cost polymer donor PTQ10 and an A-DA’D-A-type small molecule acceptor(SMA)2,2'-((2Z,2'Z)-((12,13-bis(2-butyloctyl)-3,9-bis(4-(2-ethylhexyl)thiophen-2-yl)-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2'',3'':4',5']thieno[2',3':4,5]pyrrolo[3,2-g]thieno[2',3':4,5]thieno[3,2-b]indole-2,10-diyl)bis(methaneylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(m-TEH)with a newA-DA’D-A-type SMA 2,2'-((2Z,2'Z)-((12,13-bis(2-butyloctyl)-3,9-bis(3-(2-ethylhexyl)phenyl)-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2'',3'':4',5']thieno[2',3':4,5]pyrrolo[3,2-g]thieno[2',3':4,5]thieno[3,2-b]indole-2,10-diyl)bis(methaneylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(m-PEH)(with phenyl outer side chains)as the third *** from the good compatibility and the unique alignment of the energy levels between PTQ10 and the two SMAs,the ternary system showed favorable phase separation and dominant face-on orientation,exhibiting suitable film morphology and enhanced charge ***,the optimized ternary PSCs based on PTQ10∶m-TEH∶m-PEH(1.0∶0.9∶0.3,w/w/w)demonstrated an outstanding PCE of 19.34%,which is one of the highest PCEs reported for the single junction PSCs to *** importantly,the ternary PSCs demonstrated superior tolerance to the active-layer thickness and showed a high PCE of 18.02% with a high fill factor(FF)of 76.56% for the devices with the active-layer thickness even reaching 300 *** results indicate that the ternary devices based on PTQ10∶m-TEH∶m-PEH are highly

关键词： ternary polymer solar cells A-DA’D-A-type small molecule acceptors side chain engineering insensitive to active-layer thickness commercial application

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Improving Charge Transport and Reducing Non-radiative Energy Loss via a Nonacyclic Carbazole-Based Third Component for Over 18% Efficiency polymer solar cells

Improving Charge Transport and Reducing Non-radiative Energy...

引用

第九届新型太阳能材料科学与技术学术研讨会

作者： Yongshuai Gong Shihao Sha Tinglei Zhao Chengyang Zhang Zhiming Zhou Zhanao Tan Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology

Sensible selection of host blends and the third component is crucial to give full play to the advantages of the ternary strategy for achieving high efficiency polymer solar cells(PSCs). In this work, PM6:BTP-BO-4 Cl binary system and non-fullerene acceptor DTTC-4 ClC9 with dithienocyclopentacarbazole(DTC) core are selected as the host blend and the third component, respectively. DTTC-4 ClC9 and BTP-BO-4 Cl are found to have excellent miscibility, the addition of DTTC-4 ClC9 into the binary blend can modify the morphology of the film, which brings out an improved charge transport and obviously enhanced exciton dissociation ability. The non-radiative energy loss of the devices is significantly reduced to 0.207 eV when employing the ternary strategy, thus leading a reduction in energy loss. As the result, the introduction of 15% DTTC-4 ClC9 in the PM6:BTP-BO-4 Cl system can promote power conversion efficiency from 17.11% to a remarkable 18.21%, meanwhile, the open-circuit voltage, short-circuit current density, and fill factor are increased simultaneously.

关键词： ternary polymer solar cells DTTC-4ClC9 modified surface morphology non-radiative energy loss

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：