Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/91766
Título: | Fabrication of pre-structured substrates and growth of CIGS micro-absorbers |
Autor(es): | Alves, Marina Anacleto, Pedro Teixeira, Vasco M. P. Carneiro, Joaquim A. O. Sadewasser, Sascha |
Palavras-chave: | CIGS Thin-film photovoltaics Micro-concentrator photovoltaics Sputtering Micro solar cell |
Data: | 20-Mar-2024 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Nanomaterials |
Citação: | lves, M.; Anacleto, P.; Teixeira, V.; Carneiro, J.; Sadewasser, S. Fabrication of Pre-Structured Substrates and Growth of CIGS Micro-Absorbers. Nanomaterials 2024, 14, 543. https://doi.org/10.3390/nano14060543 |
Resumo(s): | Second-generation thin-film Cu(In, Ga)Se2 (CIGS) solar cells are a well-established photovoltaic technology with a record power conversion efficiency of 23.6%. However, their reliance on critical raw materials, such as In and Ga, requires new approaches to reduce the amount of critical raw materials employed. The micro-concentrator concept involves the combination of thin-film photovoltaic technology with concentrator photovoltaic technology. This approach reduces the size of the solar cell to the micrometer range and uses optical concentration to collect sunlight from a larger area, focusing it onto micro solar cells. This work is devoted to the development of a process for manufacturing pre-structured substrates with regular arrays of holes with 200 and 250 μm diameters inside a SiOx insulating matrix. Subsequently, a Cu–In–Ga precursor is deposited by sputtering, followed by photoresist lift-off and the application of a Cu–In–Ga thermal annealing at 500 ◦C to improve precursor quality and assess pre-structured substrate stability under elevated temperatures. Finally, a two-stage selenization process leads to the formation of CIGS absorber micro-dots. This study presents in detail the fabrication process and explores the feasibility of a bottom-up approach using pre-structured substrates, addressing challenges encountered during fabrication and providing insights for future improvements in CIGS absorber materials. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/91766 |
DOI: | 10.3390/nano14060543 |
e-ISSN: | 2079-4991 |
Versão da editora: | https://www.mdpi.com/2079-4991/14/6/543 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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nanomaterials-14-00543-1.pdf | 10,07 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons