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
- 정진욱; 허진우; 이정익; 추혜용; 한일기; 주병권
- Morphology; Absorption; Organic Solar Cells; Photovoltaic; Annealing
- Issue Date
- Current applied physics
- VOL 10, NO 3, S520-S524
- 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 (Eπ) 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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