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| Type |
Poster Presentation |
| Area |
전기화학 |
| Room No. |
포스터발표장 |
| Time |
4월 21일 (금요일) 13:00~14:30 |
| Code |
ELEC.P-507 |
| Subject |
Switchable photovoltaic effect in lateral and vertical structure organometal trihalide perovskite solar cells |
| Authors |
Pham Minh Hoang, 오일환1,*
금오공과대학교 IT 융합공학과, Korea
1금오공과대학교 IT 융합공학과, 금오공과대학교 응용화학과, Korea
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| Abstract |
Recently, the use of organometal trihalide perovskite (OTP) as light absorber in solar cells has increased rapidly because of its low-cost, easy fabrication and high power conversion efficiency (PCE). Here, we show that, in both OTP vertical and lateral photovoltaic devices, the direction of the diode polarity and the photocurrents can be reversed repeatedly by applying a small electric field of < 1V μm-1. The ionic electromigration in perovskite layers induces the formation of reversible p-i-n structure, which has been identified as the origin of the switchable photovoltaic effect. The best device parameters in the poled single-layer vertical devices are comparable to those of optimized multi-layer devices with both electron- and hole-transporting layers. The lateral devices are particularly interesting because the device cost can be reduced significantly by eliminating the need for transparent electrodes. Moreover, a higher voltage can be obtained by connecting lateral structure devices in series, which meets the needs of many applications, such as house-hold devices (110 V), battery chargers (12 V), etc. This study provides a novel method for designing perovskite solar cell and manipulating the electric properties of perovskite film. |
| E-mail |
phamminhhoangntu@gmail.com |
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119th General Meeting of the KCS