Properties of oxygenated cadmium sulfide (CdS:O) and their impact on CdTe device performance
| Autor: | James M. Burst, D. M. Meysing, W. L. Rance, Teresa M. Barnes, Matthew O. Reese, Colin A. Wolden, M.M. Griffith |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
medicine.diagnostic_test Analytical chemistry chemistry.chemical_element Partial pressure Rutherford backscattering spectrometry Oxygen Cadmium telluride photovoltaics Cadmium sulfide chemistry.chemical_compound chemistry Sputtering Spectrophotometry medicine Absorption (chemistry) |
| Zdroj: | 2014 IEEE 40th Photovoltaic Specialist Conference (PVSC). |
| DOI: | 10.1109/pvsc.2014.6925073 |
| Popis: | In this work, we report on the development of a reactive sputtering process for CdS:O for high efficiency CdTe solar cells. X-ray diffraction, UV-Vis-NIR spectrophotometry, and Rutherford backscattering spectrometry were used to characterize the crystal structure, composition, and optical properties, respectively. All films were slightly Cd-rich, while the bulk oxygen content increased up to 45 at. % in direct proportion to the O 2 partial pressure. Optical absorption in cells was reduced by increasing the oxygen fraction in the sputtering ambient. Optimal performance was obtained from cells with CdS sputtered in a 6% O 2 /Ar ambient, yielding efficiency >14% and V OC >840 mV. |
| Databáze: | OpenAIRE |
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