Transparent solar cells based on a-Si1-xCx:H alloys: from silicon to carbon-rich absorbers

Amorphous silicon-based absorbers have re-emerged in recent years as a good choice for implementing highly reliable transparent photovoltaic devices. While this technology ensures long-term stability and scalability, amorphous silicon exhibits relatively high absorption in the ultraviolet and visible part of the spectrum. This work reports on the use of hydrogenated amorphous silicon-carbon (a-Si 1-x C x :H) films as a transparent absorber. By varying the carbon content, the properties of the absorber can be tuned, resulting in transparent devices with average photopic transmittance greater than 60% and a light utilization efficiency of approximately 1.3%. Additionally, the introduction of carbon enhances solar cell performance under low light irradiance, which is a typical condition in indoor photovoltaic applications.

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Publication Details

Journal
Renewable Energy
Published
2025-09-23
DOI
https://doi.org/10.1016/j.renene.2025.124455
Primary Topic
Silicon and Solar Cell Technologies
Type
article
Field-Weighted Citation Impact
0.00

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article

Transparent solar cells based on a-Si1-xCx:H alloys: from silicon to carbon-rich absorbers

J.M. Asensi, Joaquim Puigdollers, Edgardo Saucedo, C. Voz et al.
Renewable Energy
Silicon and Solar Cell Technologies
article

Transparent solar cells based on a-Si1-xCx:H alloys: from silicon to carbon-rich absorbers

J.M. Asensi, Joaquim Puigdollers, Edgardo Saucedo, C. Voz, Alex J. Lopez‐Garcia, Pau Estarlich, Gustavo Álvarez-Suárez, Ivan Masmitjà Rusiñol, Alejandro Pérez‐Rodríguez
article en

Abstract

Amorphous silicon-based absorbers have re-emerged in recent years as a good choice for implementing highly reliable transparent photovoltaic devices. While this technology ensures long-term stability and scalability, amorphous silicon exhibits relatively high absorption in the ultraviolet and visible part of the spectrum. This work reports on the use of hydrogenated amorphous silicon-carbon (a-Si 1-x C x :H) films as a transparent absorber. By varying the carbon content, the properties of the absorber can be tuned, resulting in transparent devices with average photopic transmittance greater than 60% and a light utilization efficiency of approximately 1.3%. Additionally, the introduction of carbon enhances solar cell performance under low light irradiance, which is a typical condition in indoor photovoltaic applications.

Renewable EnergyVol. 256
Institut de Recerca en Energia de Catalunya (ES), Universitat de Barcelona (ES), Universitat Politècnica de Catalunya (ES)
European Commission, Centro para el Desarrollo Tecnológico Industrial, Generalitat de Catalunya, Institució Catalana de Recerca i Estudis Avançats, European Regional Development Fund, Agencia Estatal de Investigación
Openalex Percentile: Top 74%
Silicon and Solar Cell Technologies
DOIOpen Access PDFOpenAlex
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Transparent solar cells based on a-Si1-xCx:H alloys: from silicon to carbon-rich absorbers — J.M. Asensi, Joaquim Puigdollers, et al. · Renewable Energy (2025) | TGRS Research Map | TGRS