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On the Stability of Operation of Antimony Sulfide Selenide Thin Film Solar Cells Under Solar Radiation
Author(s) -
RíosRamirez Bernardino,
Nair P. K.
Publication year - 2018
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201800479
Subject(s) - antimony , solar cell , materials science , selenide , short circuit , chemical bath deposition , open circuit voltage , thin film , chalcogenide , band gap , thermal stability , electrode , analytical chemistry (journal) , optoelectronics , chemical engineering , chemistry , nanotechnology , selenium , metallurgy , voltage , physics , chromatography , quantum mechanics , engineering
Operational stability of FTO/CdS/Sb 2 S 1.08 Se 1.92 /C‐Ag thin film solar cells under solar radiation is presented. These solar cells are produced on fluorine‐doped SnO 2 (FTO) by thermal evaporation of Sb 2 S 3 and Sb 2 Se 3 powders. Thin film of Sb 2 S 1.08 Se 1.92 (300 nm) shows a bandgap of 1.45 eV. Its electrical conductivity is 10 −7 Ω −1 cm −1 (dark) and 10 −5 Ω −1 cm −1 under illumination. Thin film of CdS (120 nm) for the solar cell is obtained on FTO by chemical deposition. Antimony chalcogenide film is deposited on FTO/CdS substrates maintained at 425 °C via thermal evaporation from a mixture of Sb 2 S 3 and Sb 2 Se 3 powders. Subsequently, graphite paint and silver paint electrodes of area 0.49–0.64 cm 2 are applied on it. Efficiency of conversion ( η ) is 5.9 % for the best solar cell and 5.6% on an average for eight cells. Open circuit voltage ( V oc ) of the cell is 0.453 V; short circuit current density ( J sc ), 24.7 mA cm −2 ; and fill factor, 0.53. For solar cells placed under the sun over 5 days in the exterior with exposure of 24 kWh m −2 , η dropped to 5%. Under 30 suns, V oc of 0.54 V and J sc of 130 mA cm −2 are recorded. The cells remained functional.