Year: 2025
Type: article
Abstract: Silver sulfide (Ag2S) is one of the best photovoltaic materials in terms of elemental composition and both chemical stability and device stability. However, the lack of suitable film processing methods severely limits the power conversion efficiency (PCE) improvement of Ag2S-based devices. Here, we propose a specific solvent engineering train for high-quality Ag2S absorber films by precisely tuning the DMSO/DMF constituent and post-deposition annealing temperature. A preferential transition in crystal orientation from (012) to ( ) crystal planes is found to play a key role in photo-induced carrier behavior. The film surface morphology and grain size are fine-tuned, while the bulk defect concentration and mitigated interface carrier recombination are well suppressed. The optimized simple ITO/Ag2S/Spiro-OMeTAD/Au device exhibits a significant increase in PCE from 0.77% to 2.57%, which is currently the highest value among the reported literatures of Ag2S solar cells without an electron transport layer.
Source: Nano Research
Authors: Junjie Fu, Weiwei Dong, Xiaobei Li, Qianqian Gao, Jin Yang, Shu Ren, Ruhan Zhao, Peng Zhu, Zhengqi Tao, Zhiye Zhu, Dandan Zhao, Chaoliang Zhao, Yange Zhang, Zhi Zheng
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,290
OpenAlex ID: W4409278678