Impact of CdS layer thickness on the composition, structure and photovoltaic performance of superstrate CZTSSe solar cells
| Autor: | Remigijus Juškėnas, Marius Franckevičius, Giedrė Grincienė, Algirdas Selskis, Gediminas Niaura, Egidijus Kamarauskas, Vidas Pakštas, Martynas Skapas, Raimondas Giraitis |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment business.industry 020209 energy Energy conversion efficiency Photovoltaic system 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Layer thickness Ion law.invention chemistry.chemical_compound Crystallinity chemistry law Solar cell 0202 electrical engineering electronic engineering information engineering engineering Optoelectronics General Materials Science CZTS Kesterite 0210 nano-technology business |
| Zdroj: | Solar Energy. 207:1231-1239 |
| ISSN: | 0038-092X |
| Popis: | In this article, we present a systematic investigation of the influence of CdS layer thickness on the structural and compositional properties of CZTSSe films and photovoltaic performance of superstrate solar cell devices. The selenization of the CZTS films results in Cd diffusion into the absorbing layer. This leads to a significant change in the lattice parameters and crystallinity, and also causes the inhomogeneous distribution of S and Se ions along the thickness of the CZTSSe layer and formation of CZCTSSe kesterite phase. Alternatively, an increase in Cd content for a certain amount also leads to the enhancement of the device performance parameters of CZCTSSe films which are attributed to the improved crystallinity, morphology and, possibly, graded band-gap. The achieved power conversion efficiency of 3.3% is among the highest for the spray pyrolysis deposited solid-state CZTSSe solar cells of superstrate architecture. |
| Databáze: | OpenAIRE |
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