Pulse electrodeposited zinc sulfide as an eco-friendly buffer layer for the cadmium-free thin-film solar cells

IF 3.3 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER Superlattices and Microstructures Pub Date : 2021-12-01 DOI:10.1016/j.spmi.2021.107060

Divya Boosagulla , Sreekanth Mandati , Prashant Misra , Ramachandraiah Allikayala , Bulusu V. Sarada

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引用次数: 6

Abstract

Zinc sulfide (ZnS) is an emerging alternate n-type buffer layer for the cadmium-free thin-film solar cells. The present research adopts a unique mixture of glycerol and tartaric acid for the emergence of phase-pure ZnS during pulse electrodeposition. Besides, proper optimization of pulse parameters aid in producing crystalline ZnS films with no post-deposition heat treatment. The as-deposited films exhibit cubic ZnS as confirmed from X-Ray Diffraction (XRD) and micro-Raman analyses. The optical study reveals an average transmittance of 71% in the wavelength spread of 300–900 nm with a band gap of 3.8 eV. The n-type semiconducting behavior of ZnS is affirmed from the Mott-Schottky analysis and the flat band potential is inferred to be −1.0 V vs SCE. The crystalline ZnS films produced from the economic pulse electrodeposition method devoid of heat treatment step, with their demonstration as photoanode in photoelectrochemical cells are suitable for the relevant applications.

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脉冲电沉积硫化锌作为无镉薄膜太阳能电池的环保缓冲层

硫化锌(ZnS)是一种新兴的用于无镉薄膜太阳能电池的交替n型缓冲层。本研究采用一种独特的甘油和酒石酸混合物，在脉冲电沉积过程中产生相纯ZnS。此外，适当优化脉冲参数有助于在不进行沉积后热处理的情况下制备结晶ZnS薄膜。通过x射线衍射(XRD)和微拉曼分析证实，沉积膜表现出立方ZnS。光学研究表明，在300 ~ 900 nm波长范围内，平均透过率为71%，带隙为3.8 eV。Mott-Schottky分析证实了ZnS的n型半导体行为，推断其平带电位为- 1.0 V vs SCE。采用经济的脉冲电沉积方法制备的结晶ZnS薄膜无需热处理步骤，并在光电化学电池中作为光阳极进行了演示，适合于相关应用。

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来源期刊

Superlattices and Microstructures 物理-物理：凝聚态物理

CiteScore

6.10

自引率

3.20%

发文量

审稿时长

2.8 months

期刊介绍： Micro and Nanostructures is a journal disseminating the science and technology of micro-structures and nano-structures in materials and their devices, including individual and collective use of semiconductors, metals and insulators for the exploitation of their unique properties. The journal hosts papers dealing with fundamental and applied experimental research as well as theoretical studies. Fields of interest, including emerging ones, cover: • Novel micro and nanostructures • Nanomaterials (nanowires, nanodots, 2D materials ) and devices • Synthetic heterostructures • Plasmonics • Micro and nano-defects in materials (semiconductor, metal and insulators) • Surfaces and interfaces of thin films In addition to Research Papers, the journal aims at publishing Topical Reviews providing insights into rapidly evolving or more mature fields. Written by leading researchers in their respective fields, those articles are commissioned by the Editorial Board. Formerly known as Superlattices and Microstructures, with a 2021 IF of 3.22 and 2021 CiteScore of 5.4