Efficiency enhancement of silicon solar cells covered by GeO2-PbO glasses doped with Eu3+ and TiO2 nanoparticles
| Autor: | Luis A. Gómez-Malagón, C.D.S. Bordon, Luciana R. P. Kassab, Guilherme Rodrigues da Silva Mattos, R.M. Gunji |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Universidade de São Paulo (USP), Polytechnic School of Pernambuco |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Silicon Band gap Down-conversion Biophysics Physics::Optics chemistry.chemical_element 02 engineering and technology engineering.material Luminescent glasses 010402 general chemistry 01 natural sciences Biochemistry law.invention Responsivity Europium law Solar cell business.industry Photovoltaic cells Doping Photovoltaic system General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics 0104 chemical sciences Polycrystalline silicon chemistry Physics::Space Physics engineering Optoelectronics 0210 nano-technology business Luminescence TiO2 nanoparticles |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2020-12-12T01:19:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco Escola Politécnica de Pernambuco, Universidade de Pernambuco An objective of the solar industry is to improve the efficiency of the light -electricity conversion process of photovoltaic solar cells. An alternative to achieve this purpose is to manage the solar spectrum that is absorbed by the solar cell in order to match it with the solar cell responsivity. It can be done, for example through the downconversion process, covering the solar cell with photonic materials that can convert photons of the UV region to photons with energy close to the band gap energy of the solar cell. This process can be observed, for example, through the UV excitation of transparent glasses with low phonon energy hosting luminescent ions with energy levels in the VIS region. The luminescence from these energetic levels can be improved siting the luminescent ions in places with low symmetry. In the present study the optical response to the solar spectrum of GeO2-PbO glasses containing Eu3+ ions and titanium dioxide nanoparticles was explored to enhance the efficiency of polycrystalline silicon solar cells. Results revealed a maximum efficiency enhancement of 15.92% for the silicon solar cell covered with GeO2-PbO glass doped with 1% of Eu2O3 and 0.5% of TiO2 heat treated for 24 h. This efficiency enhancement was attributed to the location of the Eu3+ ions in sites of low symmetry of TiO2 nanoparticles. Faculty of Technology of São Paulo CEETEPS/UNESP, São Paulo Polytechnic School of University of São Paulo University of Pernambuco Polytechnic School of Pernambuco Faculty of Technology of São Paulo CEETEPS/UNESP, São Paulo |
| Databáze: | OpenAIRE |
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