Interfacial layer for efficiency improvement of solution-processed small molecular solar cells

被引:20
|
作者
Liu, Yang [1 ]
Zhang, Fujun [1 ]
Dai, Haidao [2 ]
Tang, Weihua [3 ]
Wang, Zixuan [1 ]
Wang, Jian [1 ]
Tang, Aiwei [1 ]
Peng, Hongsheng [1 ]
Xu, Zheng [1 ]
Wang, Yongsheng [1 ]
机构
[1] Beijing Jiaotong Univ, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
[2] Tianjin Univ, Sch Sci, Tianjin Key Lab Low Dimens Mat Phys & Preparing T, Tianjin 300072, Peoples R China
[3] Nanjing Univ Sci & Technol, Minist Educ China, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China
基金
中国国家自然科学基金; 北京市自然科学基金;
关键词
Small molecule organic solar cells; Solution processed; Interfacial layer; Power conversion efficiency; Illumination intensity; ORGANIC PHOTOVOLTAIC CELLS; OPEN-CIRCUIT VOLTAGE; TO-ROLL FABRICATION; RECENT PROGRESS; THIN-FILM; POLYMER; OXIDE; ANODE; PERFORMANCE; ACCEPTOR;
D O I
10.1016/j.solmat.2013.08.013
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
A series of solution-processed small molecular solar cells (SMSCs) were fabricated with 2,4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl] (DIB-SQ) and [6,61-phenyl-C-71-butyric acid methyl ester (PC71BM) as the active layer. The cells with MoO3 as anode interfacial layer and LiF as cathode interfacial layer have the maximum power conversion efficiency (PCE) 2.68%, with short circuit density (J(sc)) of 8.2 mA/cm(2), open circuit voltage (V-oc) of 0.9 V and fill factor (FF) of 363% under 100 mW/cm(2) illumination intensity. The key parameters, including J(sc) V-oc, and FF of cells with MoO3 as anode interfacial layer and LiF as cathode interfacial layer, are improved about 54.7%, 26.9%, and 23.5% compared with these of cells using PEDOT:PSS as anode interfacial layer and LiF as cathode interfacial layer. The underlying reasons are mainly attributed to the effect of MoO3 layer on charge carrier collection and morphology of active layer. The effect of illumination intensity on the performance of cells was also discussed in detailed. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:135 / 140
页数:6
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