Photoluminescence study and observation of unusual optical transitions in Cu2ZnSnSe4/CdS/ZnO solar cells
| Autor: | Jef Poortmans, Christine Köble, Souhaib Oueslati, Trouayar Oualid, Marie Buffiere, Guy Brammertz, Marc Meuris |
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| Rok vydání: | 2015 |
| Předmět: |
Range (particle radiation)
Materials science Photoluminescence Renewable Energy Sustainability and the Environment business.industry Atmospheric temperature range Spectral line Surfaces Coatings and Films Electronic Optical and Magnetic Materials Blueshift Red shift Optoelectronics business Layer (electronics) |
| Zdroj: | Solar Energy Materials and Solar Cells. 134:340-345 |
| ISSN: | 0927-0248 |
| Popis: | In this paper, we examine photoluminescence spectra (PL) of Cu2ZnSnSe4/CdS/ZnO solar cells, based on an absorber layer fabricated by selenization of sputtered Cu, Zn, Sn multilayers, via temperaturedependent and illumination power-dependent measurements. We observe anomalous emission behavior: the PL peak initially decreases with increasing temperature (red shift) in the temperature range 10– 60 K, followed by a blue shift at higher temperature in the range 60–180 K. A recombination model is proposed that is able to explain both temperature dependent PL as well as power-dependent PL. The important aspect of the proposed model is taking into account the presence of strong potential |
| Databáze: | OpenAIRE |
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