The impact of P(NDI2OD-T2) crystalline domains on the open-circuit voltage of bilayer all-polymer solar cells with an inverted configuration
SCIE
SCOPUS
- Title
- The impact of P(NDI2OD-T2) crystalline domains on the open-circuit voltage of bilayer all-polymer solar cells with an inverted configuration
- Authors
- Kim, YJ; Park, CE
- Date Issued
- 2015-12
- Publisher
- AMER INST PHYSICS
- Abstract
- We fabricated P(NDI2OD-T2)/PTB7 bilayer all-polymer solar cells with an inverted configuration, where the annealing temperature was systematically varied. The current density-voltage behavior was investigated and the structural properties of the P(NDI2OD-T2) layers were characterized. Absorption spectroscopy, surface morphology, and crystallite analysis showed that increasing phase segregation of P(NDI2OD-T2) films occurred as the annealing temperature increased. We found that, as the P(NDI2OD-T2) stacking improved, with larger domains, the open-circuit voltage decreased and the saturation dark current density increased. This work provides a guide for the processing of P(NDI2OD-T2) layers to maximize the power conversion efficiency of all-polymer solar cells. (C) 2015 Author(s).
- Keywords
- POWER CONVERSION EFFICIENCY; ACTIVE LAYER MORPHOLOGY; BULK HETEROJUNCTION; PHOTOVOLTAIC DEVICES; PERFORMANCE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/29991
- DOI
- 10.1063/1.4937469
- ISSN
- 2166-532X
- Article Type
- Article
- Citation
- APL Materials, vol. 12, no. 3, page. 126105-1 - 126105-8, 2015-12
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