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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2022.7
- 수록면
- 407 - 414 (8page)
- DOI
- https://doi.org/10.1007/s13391-022-00348-6
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A light-harvesting effect was successfully achieved in photovoltaic devices by the structuring of an active perovskite layerthrough nanoimprinting. This was done by transforming a commercial CD-R pattern into a polydimethylsiloxane (PDMS)film. The latter was then used for replicating the perovskite layers under increased pressures and temperatures. The Young’smodulus of the PDMS film was regulated by the mixing ratio of the base and curing agents, and the average height of thepattern was reported for an optimal 5:1 base-to-curing agent ratio. Under these conditions, the replication efficiency reached80% at a pressure of ~ 4.9 kPa. To investigate the manner in which the structuring of these patterned perovskite layersaffects optoelectronic devices, we incorporated them into photovoltaic cells. This resulted in improved J?V characteristics,as observed from an increase in both fill factor (FF) and short circuit current density (Jsc), from 73.20 to 76.35% and from12.853 to 15.532 mA cm?2, respectively. The increase in FF was attributed to a large contact area between the perovskiteand electron transport layers, while the increase in Jsc was due to the enhanced light-trapping of the periodic grating patternsof the perovskite layer.
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