Polymer Science Faculty Research
Document Type
Article
Publication Date
Spring 3-18-2015
Abstract
The price of energy to separate tightly bound electron-hole pair (or charge-transfer state) and extract freely movable charges from low-mobility materials represents fundamental losses for many low-cost photovoltaic devices. In bulk heterojunction (BHJ) polymer solar cells (PSCs), approximately 50% of the total efficiency lost among all energy loss pathways is due to the photogenerated charge carrier recombination within PSCs and low charge carrier mobility of disordered organic materials. To address these issues, we introduce magnetic nanoparticles (MNPs) and orientate these MNPS within BHJ composite by an external magnetostatic field. Over 50% enhanced efficiency was observed from BHJ PSCs incorporated with MNPs and an external magnetostatic field alignment when compared to the control BHJ PSCs. The optimization of BHJ thin film morphology, suppression of charge carrier recombination, and enhancement in charge carrier collection result in a greatly increased short-circuit current density and fill factor, as a result, enhanced power conversion efficiency.
Publication Title
Scientific Reports
Volume
5
First Page
9265
Last Page
9265
Recommended Citation
Wang, Kai; Yi, Chao; Liu, Chang; Hu, Xiaowen; Chuang, Steven; and Gong, Xiong, "Effects of Magnetic Nanoparticles and External Magnetostatic Field on the Bulk Heterojunction Polymer Solar Cells" (2015). Polymer Science Faculty Research. 875.
https://ideaexchange.uakron.edu/polymerscience_ideas/875
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.