Combinatorial optimization of evaporated bilayer small molecule organic solar cells through orthogonal thickness gradients

被引：8

作者：

Rodriguez-Martinez, Xabier ^{[1
]}

Sanchez-Diaz, Antonio ^{[1
]}

Liu, Guilin ^{[2
,3
]}

Nino, M. A. ^{[2
]}

Cabanillas-Gonzalez, Juan ^{[2
]}

Campoy-Quiles, Mariano ^{[1
]}

机构：

[1] Inst Mat Sci Barcelona ICMAB CSIC, UAB Campus, Bellaterra 08193, Spain

[2] Inst Madrileno Estudios Avanzados Nanociencia IMD, Madrid 28049, Spain

[3] Jiangnan Univ, Sch Sci, Wuxi 214122, Jiangsu, Peoples R China

来源：

ORGANIC ELECTRONICS | 2018年 / 59卷

基金：

欧洲研究理事会;

关键词：

Organic photovoltaics; Photocurrent mapping; Raman imaging; Combinatorial screening; Gradient; High throughput evaluation;

D O I：

10.1016/j.orgel.2018.05.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on a combinatorial optimization procedure applied to heterojunction small molecule organic solar cells made of evaporated copper phthalocyanine (CuPc) and 3,4,9,10-perylenetetracarboxylic bisbenzimidazole (PTCBI). Our strategy consists of depositing both light harvesting compounds as orthogonally arranged wedge-shaped layers to then determine the optimum thicknesses which yield the highest photoconversion efficiency. The device performance is locally assessed by means of light-beam induced current images. A quantitative model of co-locally measured Raman images allows determining the corresponding local thicknesses of the active layers. The spatial correlation of both datasets (i.e. local photocurrent density and active layer film thicknesses) enables the rapid optimization of the photovoltaic system studied employing a single functional device, reducing in approximately 20 times the use of resources and time.

引用

页码：288 / 292

页数：5

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