Title: Ultrathin single-crystalline silicon solar cells for mechanically flexible and optimal surface morphology designs
Authors: Lin, Ching-Chang
Chuang, Yi-Jiun
Sun, Wen-Hsien
Cheng, Chieh
Chen, Yu-Tzu
Chen, Zhi-Long
Chien, Chao-Hsin
Ko, Fu-Hsiang
材料科學與工程學系
材料科學與工程學系奈米科技碩博班
電子工程學系及電子研究所
Department of Materials Science and Engineering
Graduate Program of Nanotechnology , Department of Materials Science and Engineering
Department of Electronics Engineering and Institute of Electronics
Keywords: Wet etching;Single-crystalline silicon solar cell;Flexible;Optimal surface morphology;Ultrathin
Issue Date: 1-Sep-2015
Abstract: Recently, the evolution of photovoltaic cells in together with flexible electronics rapidly grows up so as to satisfy the flexibility and elasticity needs. Therefore, it will be a breakthrough impact if it is able to develop flexible single-crystalline photovoltaic cells which are fabricated with traditional procedure and provide highly electrical properties as well. This study aims to fabricate the flexible solar photovoltaic device with practical and reproducible method. Generally, the flexible solar photovoltaic is manufactured on the 30 gm-thickness single-crystalline silicon chip by chemical etching process. Versatile design on the flexible device can enhance light trapping effect. The surface texturization and antireflection layer deposition successfully minimize the reflectivity losses from the incident light. In addition, the developed devices under concave bending morphology demonstrates better operating performance than convex and flat configurations. As to the concave bending type, the significant improvement of power conversion efficiency (129% better than flat type, and 161% better than convex type) is observed from a large device current, which is related to the contribution of light trapping enhancement. In combination of all optimal conditions, the flexible device exhibits conversion efficiency up to 13.8%. The development of novel flexible solar photovoltaics with the excellent mechanical flexibility, low silicon material consumption and low fabrication cost demonstrates the potential capability for future solar cells. (C) 2015 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.mee.2015.04.013
http://hdl.handle.net/11536/128299
ISSN: 0167-9317
DOI: 10.1016/j.mee.2015.04.013
Journal: MICROELECTRONIC ENGINEERING
Volume: 145
Begin Page: 128
End Page: 132
Appears in Collections:Articles