Performance Degradation of P3HT:PCBM Polymer/fullerene Photovoltaic Cells Under Gamma Irradiation

被引：1

作者：

Todd, A. M. ^{[1
]}

Zhu, T. ^{[1
]}

Zhang, F. ^{[1
]}

Zhang, C. U. ^{[1
]}

Berger, A. D. ^{[1
]}

Xu, J. ^{[1
]}

机构：

[1] Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA

来源：

1ST INTERNATIONAL SYMPOSIUM ON SEMICONDUCTOR AND PLASMONICS - ACTIVE NANOSTRUCTURES FOR PHOTONIC DEVICES AND SYSTEMS | 2009年 / 25卷 / 11期

关键词：

PHOTOINDUCED ELECTRON-TRANSFER; OF-FLIGHT MEASUREMENTS; SOLAR-CELLS; POLYMER; POLY(3-HEXYLTHIOPHENE); FILMS;

D O I：

10.1149/1.3236412

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Organic photovoltaic cells are being considered for space applications due to the ease of fabrication, low production cost, and the potential to be used on flexible substrates. However, space-bound cells are exposed to high levels of radiation when orbiting the Earth. In this ongoing study, we examine the performance of P3HT:PCBM photovoltaic cells after exposure to gamma radiation from a cesium-137 source (662 keV). Preliminary results show degradation of the device I-V characteristics with radiation doses up to 5 krad. The integral mode time of flight (I-TOF) technique and current extraction by a linearly increasing voltage (CELIV) technique will be used to study the electron mobility and carrier lifetime properties as a function of the radiation dose. We speculate that main chain scission and reduced p-conjugation of P3HT are the dominant mechanisms responsible for performance degradation.

引用

页码：103 / 111

页数：9