@inproceedings{f07b07736e1a478396ef341c6f0c0a86,
title = "Performance degradation of P3HT:PCBM polymer/fullerene photovoltaic cells under gamma irradiation",
abstract = "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 .-conjugation of P3HT are the dominant mechanisms responsible for performance degradation.",
author = "Todd, {A. M.} and T. Zhu and F. Zhang and Zhang, {C. U.} and Berger, {A. D.} and J. Xu",
year = "2009",
doi = "10.1149/1.3236412",
language = "English (US)",
isbn = "9781566777483",
series = "ECS Transactions",
publisher = "Electrochemical Society Inc.",
number = "11",
pages = "103--111",
booktitle = "1st International Symposium on Semiconductor and Plasmonics-Active Nanostructures for Photonic Devices and Systems",
edition = "11",
}