T Daniel, V Balasubramanian, Antony Lilly Grace, K Mohanraj
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引用次数: 0
摘要
本研究详细分析了在不同 x 值和 y 值（x = y = 0、0.25、0.50、0.75 和 1）条件下制备的热蒸发 AgxBi2-xS3-y 薄膜的光学结构、形态、电学特性和光电化学电池性能。X 射线衍射（XRD）分析证实了立方结构的 AgBiS2 和正方结构的 Bi2S3。AgxBi2-xS3-y（x = y = 0-1）薄膜在可见光区域显示出更高的光吸收系数（105 cm-1），带隙值从 2.08 eV 下降到 1.35 eV。扫描电子显微镜（SEM）图像显示了球形颗粒的均匀分布。从莫特-肖特基图中观察到，薄膜的载流子浓度优于 x = y = 0。FTO/AgxBi2-xS3-y（x = y = 1）光电化学电池的光电转换效率（PCE）为 7.03%。
Fabrication of Ag injection in Bi2S3 (AgBiS2) thin films for photoelectrochemical cell applications
The present investigation deals with the detailed analysis of opto-structural, morphological, electrical properties and photoelectrochemical cell performances of thermally evaporated AgxBi2−xS3−y thin film prepared for various x and y values (x = y = 0, 0.25, 0.50, 0.75 and 1). The cubic-structured AgBiS2 along with orthorhombic-structured Bi2S3 as confirmed from X-ray diffraction (XRD) analysis. The AgxBi2−xS3−y (x = y = 0–1) films showed higher optical absorption coefficient (105 cm−1) in the visible region and band gap values were found to be decreased from 2.08 to 1.35 eV. Scanning electron microscope (SEM) images have visualized the uniform distribution of spherical particles. Carrier concentration of the films are better than x = y = 0 as observed from Mott–Schottky plots. The FTO/AgxBi2−xS3−y (x = y = 1) photoelectrochemical cell yields the photoconversion efficiency (PCE) of 7.03%.
期刊介绍：
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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