CdS-Based Interface Engineering for 1.7 V Voltage Vacuum-Deposited Inorganic Perovskite Solar Cells

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2024-11-18 DOI:10.1021/acsaem.4c0219410.1021/acsaem.4c02194

Arkadi Akopian, Purnendu Kartikay*, Shadab Soomro, Saba Sharikadze, Ranjith Kottokkaran and Vikram L. Dalal*,

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引用次数: 0

Abstract

All-inorganic cesium lead bromide (CsPbBr₃) perovskite solar cells (PSCs) have gained significant attention due to their superior stability compared to that of organic–inorganic hybrid devices. In this study, we employ a vacuum-deposited cadmium sulfide (CdS) interfacial layer to address the challenge of achieving a high open-circuit voltage (V_oc) in vacuum-deposited CsPbBr₃ PSCs. Incorporating a thin layer of CdS between the electron transport layer (ETL) and the inorganic perovskite absorber enhances the V_oc to 1.7 V, along with the power conversion efficiency (PCE) increase from 7.8% to 8.4%. Moreover, adding this interfacial layer improves the charge extraction by potentially reducing grain boundary recombination centers via enlarging perovskite grain sizes. Our results show the average perovskite grain size increases from 4 μm to 6 μm on CdS incorporated samples compared to the control. This work reveals the potential of using CdS as a passivation layer to improve charge extraction characteristics by minimizing bimolecular recombinations.

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用于 1.7 V 电压真空沉积无机 Perovskite 太阳能电池的基于 CdS 的界面工程技术

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来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.