Solution-processed organic photovoltaics based on indoline dye molecules developed in dye-sensitized solar cells

Zhaoyang Liu; Haruhiko Ojima; Ziruo Hong; Junji Kido; Wenjing Tian; Xiao-Feng Wang

doi:10.3390/molecules18033107

Solution-processed organic photovoltaics based on indoline dye molecules developed in dye-sensitized solar cells

Molecules. 2013 Mar 7;18(3):3107-17. doi: 10.3390/molecules18033107.

Authors

Zhaoyang Liu¹, Haruhiko Ojima, Ziruo Hong, Junji Kido, Wenjing Tian, Xiao-Feng Wang

Affiliation

¹ Department of Organic Device Engineering, Research Center for Organic Electronics, Yamagata University, Yonezawa, Yamagata 992-8510, Japan.

Abstract

A donor-acceptor (D-A) type indoline dye, D149, was used as an electron donor in solution-processed organic solar cells (OSCs). For bulk-heterojunction (BHJ) type OSCs with PC70BM as electron acceptor, the power conversion efficiency (PCE) is sensitive to the amount of D149 in the D149/PC70BM blend film. When the concentration of D149 in the blend film was as low as 5%, the highest PCE of up to 1.29%, together with a short-circuit current density (Jsc) of 4.58 mA·cm-2, an open-circuit voltage (Voc) of 0.90 V and a fill factor (FF) of 0.31, was achieved. In order to improve the PCE of D149-based OSCs, a bilayer-heterojunction configuration with C70 as electron acceptor has been employed. By optimizing the thickness of the D149 layer and varying the electron- and hole-transport layers, a highest PCE of up to 2.28% with a Jsc of 4.38 mA·cm-2, a Voc of 0.77 V, and an FF of 0.62 was achieved under AM 1.5G solar illumination (100 mW·cm-2).

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Coloring Agents / chemistry*
Indoles / chemistry*
Molecular Structure
Solar Energy*
Solutions
Sunlight*

Substances

Coloring Agents
Indoles
Solutions
indoline