Effects of thermal annealing on the efficiency of bulk-heterojunction organic photovoltaic devices
Effects of thermal annealing on the efficiency of bulk-heterojunction organic photovoltaic devices
- 주제(키워드) Morphology Absorption Organic solar cells Photovoltaic Annealing
- 발행기관 한국물리학회
- 발행년도 2010
- 총서유형 Journal
- UCI G704-001115.2010.10.3.053
- KCI ID ART001487832
- 본문언어 영어
초록/요약
This paper studies the effect of the annealing process on the performance of P3HT/PCBM photovoltaic devices, in terms of their efficiencies. The basic photovoltaic devices are annealed on a hot-plate, at a temperature of 150 ℃ for 10 min in air. For comparison, the thermal annealing of photovoltaic devices is carried out using rapid thermal annealing (RTA) equipment, at a temperature of 150 ℃ for 10 min in different environments such as in vacuum, in nitrogen and in argon, individually. The light conversion efficiency (Eff) of the resulting photovoltaic devices increases from 2.29% (hot-plate annealing) to 2.77% after annealing in a vacuum environment. As a result, the organic photovoltaic devices, annealed in a vacuum show enhanced efficiencies compared with those annealed in different gas environments.
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