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优化了SNS薄膜太阳能电池的后接口被动化,使用受控的氧化中间层来提高光伏性能

Rahul K Yadav¹, Vishesh Manjunath¹, Yong Tae Kim¹

¹Department of Materials Science and Engineering, and Optoelectronics Convergence Research Center, Chonnam National University, Gwangju, 61186, Republic of Korea.

Small (Weinheim an der Bergstrasse, Germany)

|September 19, 2025

概括

一个氧化 (GeO_x) 的中间层有效地使硫化 (SnS) 薄膜太阳能电池的后接触被动,通过减少缺陷和提高接口质量,显著提高了功率转换效率.

科学领域:

材料科学材料科学材料科学
可再生能源可再生能源是可再生能源.
半导体物理半导体物理

背景情况:

单硫化 (SnS) 是薄膜太阳能电池 (TFSC) 的一个有前途的地球丰富的吸收剂.
设备效率受到后接触处 (Mo/SnS) 接口质量差的限制,导致重组损失.
在Mo/SnS接口上的缺陷状态,反应和扩散阻碍了光伏 (PV) 的性能.

研究的目的:

使用氧化 (GeO_x) 介面层设计SNS TFSC的后端接口.
为了使Mo/SnS接口被动化,并减轻重组损失.
为了提高基于SnS的太阳能电池的整体功率转换效率.

主要方法:

使用热蒸发的GeO_x中间层制造SnS TFSC.
使用包括深层次瞬态光谱 (DLTS) 在内的技术对Mo/SnS接口进行表征.
在GeO_x修改之前和之后对设备性能和接口属性的分析.

主要成果:

GeO_x中间层改善了SnS吸收器形态,并被动化了深层缺陷.
GeO_x抑制了有害的 (Na⁺) 扩散,并抑制了MoS₂形成.
DLTS证实了Na诱导的中间隙捐赠者样陷的减少,缓解了非辐射重组.

结论:

GeO_x 作为SNS TFSC的有效界面修饰器.
与GeO_x的接口工程显著提高了设备功率转换效率.
这一策略提供了一个切实可行的解决方案,以克服SnS太阳能电池的性能限制.

关键词:

DLTS DLTS是什么意思形成一个MoS2层的形成.在NA的扩散.氧化物 (GeOx) 是一种后面接口的被动化方式锡硫化物 (SnS) 是一种硫化物.

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