Enhanced Performance of Inverted Organic Solar Cells by Introducing a Phosphorescence-Doped Electron Extraction Layer

Author

Hao-Jun Xie ; Yan-Qing Li ; Guo-Fu Ma ; Qian-Kun Wang ; Dan-Dan Zhang ; Jian-Xin Tang

Author_Institution

Inst. of Functional Nano & Soft Mater., Soochow Univ., Suzhou, China

Volume

5

Issue

3

fYear

2015

fDate

42125

Firstpage

885

Lastpage

888

Abstract

An efficient organic solar cell is demonstrated using a solution-processed phosphorescence-doped electron extraction layer (PDEEL) as the complementary optical response layer, which can absorb the ultraviolet light and reemit green light, and eventually be utilized by the active layer. Besides, the optimized PDEEL is also demonstrated as an efficient interfacial layer, which exhibits a super energy match and leads to the enhancement of electron collection ability. As a result, a 39.5% enhancement of power conversion efficiency is achieved from 3.39% to 4.73%, which is attributed to the effective utilization of high-energy photons and the improved electrical properties by PDEEL.

Keywords

organic compounds; phosphorescence; power conversion; solar cells; ultraviolet spectra; active layer; complementary optical response layer; electrical properties; electron collection ability; high-energy photon; interfacial layer; inverted organic solar cell; optimized PDEEL; phosphorescence-doped electron extraction layer; power conversion efficiency; reemit green light; solution-processed phosphorescence-doped electron extraction layer; super energy; ultraviolet light absorption; Absorption; Doping; Excitons; Photovoltaic cells; Photovoltaic systems; Polymers; Organic solar cells (OSC); phosphor-doped layer; singlet excitons; triplet excitons;

fLanguage

English

Journal_Title

Photovoltaics, IEEE Journal of

Publisher

ieee

ISSN

2156-3381

Type

jour

DOI

10.1109/JPHOTOV.2015.2400216

Filename

7057542