Excellent properties of Ga-doped ZnO film as an alternative transparent electrode for thin-film solar cells

IF 2.1 3区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Glass Science Pub Date : 2022-05-17 DOI:10.1111/ijag.16585

Shou Peng, Wei Wang, Tingting Yao, Min Guan, Zhiping Gan, Jingyuan Chu, Linlin Gai

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引用次数: 2

Abstract

Optical and electrical properties of transparent electrode are directly related to the photoelectric conversion efficiency of thin-film solar cells. For this reason, Ga and Al-doped ZnO (GZO and AZO) transparent conducting films were fabricated on float glass through the magnetic sputtering technique. Compared with AZO films, GZO films show a higher figure of merit (FoM) value indicating their outstanding optical and electrical properties. The smaller difference of ionic radius between Ga³⁺ and Zn²⁺ than Al³⁺ and Zn²⁺ contributes to high carrier concentration and electron mobility of GZO films. In addition, it has been shown that GZO films can be stable at high substrate temperatures. After being annealed at 550°C in N₂ atmosphere, the FoM value of GZO films is twice as much as that of FTO films, indicating that GZO can be applied as the front contact material not only in CIGS thin-film solar cells, but also in CdTe thin-film solar cells.

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镓掺杂ZnO薄膜作为薄膜太阳能电池透明电极的优良性能

透明电极的光学和电学性能直接关系到薄膜太阳能电池的光电转换效率。为此，采用磁溅射技术在浮法玻璃上制备了Ga和al掺杂ZnO (GZO和AZO)透明导电膜。与AZO薄膜相比，GZO薄膜表现出更高的FoM值，表明其具有优异的光学和电学性能。Ga3+和Zn2+的离子半径差小于Al3+和Zn2+，这有助于GZO薄膜的高载流子浓度和高电子迁移率。此外，研究还表明，GZO薄膜在较高的衬底温度下是稳定的。在N2气氛中550℃退火后，GZO薄膜的FoM值是FTO薄膜的2倍，表明GZO不仅可以作为CIGS薄膜太阳能电池的前接触材料，也可以作为CdTe薄膜太阳能电池的前接触材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Applied Glass Science MATERIALS SCIENCE, CERAMICS-

CiteScore

4.50

自引率

9.50%

发文量

审稿时长

>12 weeks

期刊介绍： The International Journal of Applied Glass Science (IJAGS) endeavors to be an indispensable source of information dealing with the application of glass science and engineering across the entire materials spectrum. Through the solicitation, editing, and publishing of cutting-edge peer-reviewed papers, IJAGS will be a highly respected and enduring chronicle of major advances in applied glass science throughout this century. It will be of critical value to the work of scientists, engineers, educators, students, and organizations involved in the research, manufacture and utilization of the material glass. Guided by an International Advisory Board, IJAGS will focus on topical issue themes that broadly encompass the advanced description, application, modeling, manufacture, and experimental investigation of glass.