QIBEBT-IR研究单元&专题: 先进有机功能材料研究组http://ir.qibebt.ac.cn:80/handle/0/1472024-03-28T20:33:42Z2024-03-28T20:33:42Z窄带隙聚合物的能级调控及在有机太阳能电池中的应用研究Bilal Shahidhttp://ir.qibebt.ac.cn:80/handle/337004/136822019-12-31T10:57:19Z2019-12-31T10:57:19Z题名: 窄带隙聚合物的能级调控及在有机太阳能电池中的应用研究
作者: Bilal Shahid2019-12-31T10:57:19Z噻唑异靛蓝的设计、合成及其聚合物场效应晶体管性能研究李晨晨http://ir.qibebt.ac.cn:80/handle/337004/136762019-12-31T10:57:15Z2019-12-31T10:57:15Z题名: 噻唑异靛蓝的设计、合成及其聚合物场效应晶体管性能研究
作者: 李晨晨2019-12-31T10:57:15Z打破对称性分子设计策略在构筑高效有机光伏材料中的应用刘德昱http://ir.qibebt.ac.cn:80/handle/337004/136742019-12-31T10:57:14Z2019-12-31T10:57:14Z题名: 打破对称性分子设计策略在构筑高效有机光伏材料中的应用
作者: 刘德昱2019-12-31T10:57:14Z杂原子效应对聚合物光伏材料的影响袁熙越http://ir.qibebt.ac.cn:80/handle/337004/136462019-12-31T10:56:57Z2019-12-31T10:56:57Z题名: 杂原子效应对聚合物光伏材料的影响
作者: 袁熙越2019-12-31T10:56:57Z基于非富勒烯受体的有机太阳能电池的研究姜焕祥http://ir.qibebt.ac.cn:80/handle/337004/134662018-12-29T22:02:39Z2018-12-29T09:33:11Z题名: 基于非富勒烯受体的有机太阳能电池的研究
作者: 姜焕祥2018-12-29T09:33:11ZFusing Benzo[c][1,2,5]oxadiazole Unit with Thiophene for Constructing Wide-bandgap High-performance IDT-based Polymer Solar Cell Donor MaterialSong, XinFan, MeijieZhang, KailiDing, DakangChen, WeiyeLi, YonghaiYu, LiangminSun, MingliangYang, Renqianghttp://ir.qibebt.ac.cn:80/handle/337004/108102018-09-06T06:59:48Z2018-09-06T06:59:48Z题名: Fusing Benzo[c][1,2,5]oxadiazole Unit with Thiophene for Constructing Wide-bandgap High-performance IDT-based Polymer Solar Cell Donor Material
作者: Song, Xin; Fan, Meijie; Zhang, Kaili; Ding, Dakang; Chen, Weiye; Li, Yonghai; Yu, Liangmin; Sun, Mingliang; Yang, Renqiang
摘要: Benzo[c][1,2,5]oxadiazole (BO) moiety is a strong electron-withdrawing unit compared to benzo[c][1,2,5]thiadiazole (BT). It is usually introduced as an acceptor to construct narrow band-gap donor-acceptor (D-A) materials. Herein, the -extended conjugated moiety dithieno[3',2':3,4 '';2,3 '':5,6]-benzo[1,2-c][1,2,5]oxadiazole (BOT) was adopted as the acceptor moiety to design D-A polymers. Considering the more extended pi-conjugated molecular system of BOT compared to the BO unit, a narrower optical band-gap is expected for BOT-based IDT polymer (PIDT-BOT). Unexpectedly, the UV-vis absorption spectra of PIDT-BOT films display a great hypochromatic shift of about 60 nm compared to a BO-based analog (PIDT-BO). The optical band-gaps of the materials are broadened from 1.63 eV (PIDT-BO) to 2.00 eV (PIDT-BOT) accordingly. Although the range of external quantum efficiency (EQE) of PIDT-BOT-based polymer solar cell (PSC) devices is not as wide as for PIDT-BO-based devices, the EQE response intensities of the PIDT-BOT based device are evidently high. As a result, PSC devices based on PIDT-BOT reveal the best power conversion efficiency at 6.08%.2018-09-06T06:59:48ZSolution-processed functionalized reduced graphene oxide-an efficient stable electron buffer layer for high-performance solar cellsWang, YingyingBao, XichangPang, BeiliZhu, QianqianWang, JunyiZhu, DangqiangYu, LiyanYang, RenqiangDong, Lifenghttp://ir.qibebt.ac.cn:80/handle/337004/106722019-12-31T08:34:00Z2018-09-06T06:58:51Z题名: Solution-processed functionalized reduced graphene oxide-an efficient stable electron buffer layer for high-performance solar cells
作者: Wang, Yingying; Bao, Xichang; Pang, Beili; Zhu, Qianqian; Wang, Junyi; Zhu, Dangqiang; Yu, Liyan; Yang, Renqiang; Dong, Lifeng
摘要: Interfacial buffer layer is a primary requirement for highly efficient and stable organic solar cells (OSCs) and has become a significant part of OSC research today. Here, highly dispersed functionalized reduced graphene oxide (FGr) was obtained as a stable electron buffer layer (EBL) for high-performance conventional solar cells. The power conversion efficiency of FGr-based devices (9.47% for PTB7-Th: PC71BM and 4.05% for P3HT: PC71BM) outperforms PFN-based devices (8.94% and 3.52%). Furthermore, the stability of the devices was greatly improved with FGr as EBL compared to PFN, and only dropped 7.4% of its original value after stored for 61 days. The results indicate that solution-processed functionalized reduced graphene oxide is a promising interfacial material and an excellent candidate as electron buffer layer. (C) 2018 Elsevier Ltd. All rights reserved.2018-09-06T06:58:51ZStirring Up Acceptor Phase and Controlling Morphology via Choosing Appropriate Rigid Aryl Rings as Lever Arms in Symmetry-Breaking Benzodithiophene for High-Performance Fullerene and Fullerene-Free Polymer Solar CellsLiu, DeyuWang, JunyiGu, ChunyangLi, YonghaiBao, XichangYang, Renqianghttp://ir.qibebt.ac.cn:80/handle/337004/106542019-12-31T08:34:02Z2018-09-06T06:58:44Z题名: Stirring Up Acceptor Phase and Controlling Morphology via Choosing Appropriate Rigid Aryl Rings as Lever Arms in Symmetry-Breaking Benzodithiophene for High-Performance Fullerene and Fullerene-Free Polymer Solar Cells
作者: Liu, Deyu; Wang, Junyi; Gu, Chunyang; Li, Yonghai; Bao, Xichang; Yang, Renqiang
摘要: Two series of new polymers with medium and wide bandgaps to match fullerene (PC71BM) and fullerene-free 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2,3-d]-s-indaceno[1,2-b:5,6-b]dithiophene (ITIC) acceptors are designed and synthesized, respectively. For constructing the key donor building blocks, the effective symmetry-breaking strategy is employed. Two common aromatic rings (thiophene and benzene) are chosen as one side substituted groups in the asymmetric benzodithiophene (BDT) monomers. In addition, another rigid benzene ring is inserted between aryl and thioether in the side chains, which results in larger twisting and destroying the aggregation and forming longer lever arms. As a result, highly ordered polymers (PBDTsTh-FBT and PBDTsPh-FBT) with strong aggregation properties can blend well with roughly spherical PC71BM, while amorphous polymers (PBDTsThPh-BDD and PBDTsPhPh-BDD) with long and rigid aryl rings show good miscibility with elongated ITIC, and finally, both devices exhibit excellent power conversion efficiencies over 10%. Thus, it clearly shows that the asymmetric BDT unit is an excellent donor building block to construct highly efficient photovoltaic polymers. Meanwhile, this work demonstrates that it is not necessary that high-performance fullerene-free polymer solar cells (PSCs) require highly ordered microstructures in the blending films, different from the fullerene-based PSCs.2018-09-06T06:58:44ZEnergy levels modulation of small molecule acceptors for polymer solar cellsLiu, RanshengDu, ZurongWen, ShuguangWu, YaoZhu, DangqiangYang, Renqianghttp://ir.qibebt.ac.cn:80/handle/337004/106042019-12-31T08:31:19Z2018-09-06T06:58:22Z题名: Energy levels modulation of small molecule acceptors for polymer solar cells
作者: Liu, Ransheng; Du, Zurong; Wen, Shuguang; Wu, Yao; Zhu, Dangqiang; Yang, Renqiang
摘要: Non-fullerene acceptor exhibits very promising prospect for the development of polymer solar cells (PSCs). It is necessary to carefully investigate the energy level matching between donor and acceptor to optimize the photovoltaic performance. In this paper, we have designed and synthesized two novel planar A-D-A type small molecular acceptors of IDT-RCN and IDT-CA with 2-(1,1-dicyanomethylene)rhodanine and cyanoacetate as the end groups, respectively. Compared to IDT-RCN with stronger electron-deficient end group, IDT-CA displayed 0.15 eV increase in LUMO level while almost the same HOMO level. PSC devices based on P3HT:IDT-CA show a power conversion efficiency (PCE) of 4.19% with Voc of 0.84 V, Jsc of 7.77 mA cm(-2) and FF of 0.64, which is much higher than that of P3HT:IDT-RCN mainly due to the higher Voc value. This work indicates that end group modification is important for the modulation of PSC device parameters.2018-09-06T06:58:22ZAlkylthienyl substituted asymmetric 2D BDT and DTBT-based polymer solar cells with a power conversion efficiency of 9.2%Gu, ChuantaoLiu, DeyuWang, JunyiNiu, QingfenGu, ChunyangShahid, BilalYu, BingCong, HailinYang, Renqianghttp://ir.qibebt.ac.cn:80/handle/337004/105602019-12-31T08:33:53Z2018-09-06T06:58:05Z题名: Alkylthienyl substituted asymmetric 2D BDT and DTBT-based polymer solar cells with a power conversion efficiency of 9.2%
作者: Gu, Chuantao; Liu, Deyu; Wang, Junyi; Niu, Qingfen; Gu, Chunyang; Shahid, Bilal; Yu, Bing; Cong, Hailin; Yang, Renqiang
摘要: An alkyl thiophene unit was employed for the first time as a side chain substituent on an asymmetric benzodithiophene (BDT) building block in the design of novel light-harvesting polymers. A new D-A type polymer (PBDTTh-DTffBT) based on alkylthienyl asymmetric BDT and the well-known 4,7-di(thiophen-2-ethylhexyl)-5,6-difluoro-2,1,3-benzothiadiazole (DTffBT) was synthesized through a palladium catalyzed Stille coupling reaction. Efficient bulk heterojunction solar cells were fabricated by blending PBDTTh-DTffBT with PC71BM. The optimized PBDTTh-DTffBT-based photovoltaic device exhibits an open circuit voltage (V-OC) of 0.87 V, a short-circuit current density (J(SC)) of 15.06 mA cm(-2), a fill factor (FF) of 70.4% and a high power conversion efficiency (PCE) of 9.22%. The PCE was higher than the polymers which have the same backbone structure but also have the 1D or 2D symmetric BDT unit. In addition, a PCE of 7.83% with a V-OC of 0.91 V, a J(SC) of 13.62 mA cm(-2), and an FF of 63.2% was obtained for PBDTTh-DTffBT/ITIC, which is also impressive for non-fullerene PSCs. The results indicate that our design strategy of introducing an alkylthienyl unit as side chain to fabricate asymmetric BDT-based polymer is efficient in improving the photovoltaic performance.2018-09-06T06:58:05Z