东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

Detailed analysis of ultrathin fluorescent red dye interlayer for organic photovoltaic cells

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：TN386[电子电信—物理电子学] TM914[电气工程—电力电子与电力传动]
作者机构：[1]State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, China
相关基金：Project partially supported by the National Natural Science Foundation of China （NNSFC）（Grant Nos. 60736005 and 604251011）, the Foundation for Innovative Research Groups of the NNSFC （Grant No. 60721001）, the Research Fund for the Dectoral Program of Higher Education （RFDP）（Grant No. 20090185110020）, the Program for New Century Excellent Talents in University, China （Grant No. NCET-06-0812）, the Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry （Grant No. GGRYJJ08-05）, and the Young Excellence Project of Sichuan Province, China （Grant No. 09ZQ026-074）.

关键词：有机光伏电池, 荧光染料, 超薄, DCJTB, 挥发性有机化合物, 短路电流密度, 层间, 细分, organic photovoltaic （OPV） cells, DCJTB, interlayer thickness, ultrathin red dye

中文摘要：

The influence of an ultrathin 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) fluorescent dye layer at donor/acceptor heterojunction on the performance of small-molecule organic photovoltaic (OPV) cell is studied.The structure of OPV cell is of indium-tin oxide (ITO)/copper phthalocyanine (CuPc)/DCJTB/fullerene (C 60)/bathophenanthroline (Bphen)/Ag.The results show that open circuit voltage (V OC) increases to 0.57 V as the film thickness of DCJTB layer increases from 0.2 to 2.0 nm.By using an equivalent circuit model,the enhancement of V OC is found to be attributed to the reduced reverse saturation current density (J S) which is due to the lower highest occupied molecular orbital (HOMO) level in DCJTB than that in CuPc.Also,the short circuit current density (J SC) is affected when the DCJTB layer becomes thicker,resulting from the high series resistance R S A due to the low charge carrier mobility of fluorescent red dye.

英文摘要：

The influence of an ultrathin 4-（dicyanomethylene）-2-t-butyl-6-（1,1,7,7-tetramethyljulolidyl-9-enyl）-4H-pyran （DCJTB） fluorescent dye layer at donor/acceptor heterojunction on the performance of small-molecule organic photovoltaic （OPV） cell is studied. The structure of OPV cell is of indium-tin oxide （ITO）/copper phthalocyanine （CuPc）/DCJTB/fullerene （C60）/bathophenantbroline （Bphen）/Ag. The results show that open circuit voltage （Voc） increases to 0.57 V as the film thickness of DCJTB layer increases from 0.2 to 2.0 nm. By using an equivalent circuit model, the enhancement of VOC is found to be attributed to the reduced reverse saturation current density （Js） which is due to the lower highest occupied molecular orbital （HOMO） level in DCJTB than that in CuPc. Also, the short circuit current density （JSC） is affected when the DCJTB layer becomes thicker, resulting from the high series resistance RsA due to the low charge carrier mobility of fluorescent red dye.