|
Type |
Poster Presentation |
Area |
Material Chemistry |
Room No. |
Event Hall |
Time |
4월 20일 (금요일) 11:00~12:30 |
Code |
MAT.P-412 |
Subject |
Flexible crystalline silicon radial junction photovoltaics with vertically aligned tapered microwires |
Authors |
Inchan Hwang, KWANYONG SEO1,* Department of Energy Engineering, Ulsan National Institute of Science and Technology, Korea 1School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, Korea |
Abstract |
Much attention has been paid to thin crystalline silicon (c-Si) photovoltaic devices due to their excellent flexibility characteristics, stable efficiency, and possibility of use as highly efficient next-generation flexible photovoltaic devices (FPVs). To fabricate thin c-Si FPVs, it is important to improve their light-absorption properties while maintaining the flexible characteristics. In this study, vertically aligned microwires (MWs) on a 50-µm-thick thin c-Si substrate are designed for novel FPVs. Increasing the length of the MWs enhances the optical properties of the thin c-Si without affecting its flexibility. To maximize the efficiency of the thin c-Si FPVs with MWs, tapered MWs and a localized back-contact structure are devised. This device shows a maximum efficiency of 18.9%. In addition, the proposed thin c-Si FPV with MWs shows high stability without any change in efficiency, even with 1,000 bending cycles with a bending radius of 12 mm. Thus, we successfully demonstrate battery-free flexible electronic devices integrated with our thin c-Si FPVs with MWs. |
E-mail |
ichwang@unist.ac.kr |
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