Nanostructured Electron-Selective Interlayer for Efficient Inverted Organic Solar Cells

被引：4

作者：

Song, Jiyun ^{[1
]}

Lim, Jaehoon ^{[2
,3
]}

Lee, Donggu ^{[1
]}

Thambidurai, M. ^{[1
]}

Kim, Jun Young ^{[1
]}

Park, Myeongjin ^{[1
]}

Song, Hyung-Jun ^{[1
,3
]}

Lee, Seonghoon ^{[4
]}

Char, Kookheon ^{[2
]}

Lee, Changhee ^{[1
]}

机构：

[1] Seoul Natl Univ, Interuniv Semicond Res Ctr, Dept Elect & Comp Engn, Seoul 151744, South Korea

[2] Seoul Natl Univ, WCU Program Chem Convergence Energy & Environm, Sch Chem & Biol Engn, Natl Creat Res Initiat Ctr Intelligent Hybrids, Seoul 151744, South Korea

[3] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA

[4] Seoul Natl Univ, Sch Chem, Seoul 151747, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 33期

基金：

新加坡国家研究基金会;

关键词：

nanostructured extraction layer; electron-selective interlayer; electron buffer layer; organic-inorganic hybrid solar cells; CdSe tetrapods; bulkheterojunction; POWER CONVERSION EFFICIENCY; OPTICAL SPACER; ZNO; GROWTH; RECOMBINATION; OXIDE;

D O I：

10.1021/acsami.5b04624

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report a unique nanostmctured electron-selective interlayer comprising of In-doped ZnO (ZnO:In) and vertically aligned CdSe tetrapods (TPs) for inverted polymer:fullerene bulkheterojunction (BHP solar cells. With dimension-controlled CdSe TPs, the direct inorganic electron transport pathway is provided, resulting in the improvement of the short circuit current and fill factor of devices. We demonstrate that the enhancement is attributed to the roles of CdSe TPs that reduce the recombination losses between the active layer and buffer layer, improve the hole-blocking as well as electron-transporting properties, and simultaneously improve charge collection characteristics. As a result, the power conversion efficiency of PTB7:PC70BM based solar cell with nanostructured CdSe TPs increases to 7.55%. We expect this approach can be extended to a general platform for improving charge extraction in organic solar cells.

引用

页码：18460 / 18466

页数：7

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