Year: 2025
Type: article
Abstract: Charge transfer and recombination dynamics are key to understanding and optimizing photovoltaic devices. However, metallic contacts are typically used to fabricate devices, making them incompatible with transmission spectroscopic techniques such as transient absorption spectroscopy (TAS). Omission of the top contact to avoid this issue results in mismatched results and has limited previous work examining the dynamics in thin‐film Sb2S3‐based devices. In this work, this challenge is overcome by developing a new methodology, adding a protective layer of ZnO over hole transport materials, allowing fabrication of transparent (i.e., bifacial) solar cell devices. Photovoltaic characterization reveals similar J‐V curves between reference and bifacial cells. Examination with TAS reveals a modified mechanism that builds off of previously proposed models for similar systems. Optical modeling supports the understanding of several important changes to the mechanism. These results provide a path toward the investigation of photo‐driven dynamics under more realistic operating conditions.
Source: Advanced Materials Interfaces
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,100
Awards: MRI: Acquisition of Transient Absorption Spectrometer for Multidisciplinary Research in Chemistry, Materials Science and Solar Energy Conversion, G1501557578, G3086860991, Sonnengetriebene CO2Reduktion an Photoelektroden mit nanoskaliger Architektur und fortgeschrittenem Photonenmanagement, CAS-SC: Uncovering Mechanistic Details of Photo-Induced Charge Transfer in Thin Films of Photoactive Materials with In situ and Operando Transient Absorption Spectroscopy, G80978918, A preparative approach to geometric effects in innovative solar cell types based on a nanocylindrical structure
OpenAlex ID: W4414216827