Journal
2020 47TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
Volume -, Issue -, Pages 1782-1785Publisher
IEEE
DOI: 10.1109/pvsc45281.2020.9300466
Keywords
cadmium selenide; thin film; chemical bath; pulsed DC magnetron sputtering
Funding
- EPSRC CDT in New and Sustainable Photovoltaics
- EPSRC SuperSolar Network
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Cadmium selenide (CdSe) thin films deposited using chemical bath deposition and pulsed DC magnetron sputtering are compared for use in cadmium telluride/selenide (CST) photovoltaic (PV) devices. Full devices were made from the bath and sputtered films using a cadmium chloride (CdCl2) treatment temperature of 425 degrees C, this gave an overall efficiency of 9.3% and 3.2% respectively. Photoluminescence (PL) of the sputtered sample confirmed a bandgap was present of 1.58 eV which suggested poor diffusion at 425 degrees C. A (CdCl2) treatment temperature of 465 degrees C gave a large PL peak at 1.37 eV which corresponds to the bandgap of CST, indicating diffusion was more effective at this temperature.
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