Study of ZnO Nanospheres Fabricated via Thermal Evaporation for Solar Cell Application

Fatin Farisha Alia, Azmi and Sahraoui, Bouchta and Saifful Kamaluddin, Muzakir (2019) Study of ZnO Nanospheres Fabricated via Thermal Evaporation for Solar Cell Application. Makara Journal of Technology, 23 (1). pp. 11-15. ISSN 2355-2786. (Published)

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A solar cell is a device that absorbs light energy to generate electrical energy. A typical example of a solar cell is the quantum dot solar cell (QDSC), which consists of three main components: (i) fluorophore: the component that absorbs light and generates excited state electrons and holes, (ii) photoelectrode: the component that transports the excited state electron and prevents recombination of excited state electrons and holes, and (iii) electrolyte: the component that re-plenishes the vacancy left by the excited electron in the hole. Despite the increasing number of research in the QDSC field, to date, a device with significant photovoltaic efficiency has not been developed. In this study, the mechanism of electron transport in a zinc oxide (ZnO) photoelectrode was investigated. Two ZnO layers were fabricated using thermal evaporation method at different vacuum pressures (5 × 10-4 and 5 × 10-5 Torr). Two solar cells were fabricated using ZnO as photoelectrode, lead sulphide as fluorophore, and a mixture of carboxymethyl cellulose and polyvinyl alcohol as electrolyte. The cell which utilized the ZnO fabricated under 5 × 10-5 Torr showed the highest efficiency ( = 0.98%), with fill factor = 22.07%, short circuit current = 2.85 mA/m2, and open circuit voltage = 80.719 mV.

Item Type: Article
Uncontrolled Keywords: efficiency, fluorophore, thermal evaporation, photoelectrode, zinc oxide
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Faculty/Division: Faculty of Industrial Sciences And Technology
Institute of Postgraduate Studies
Depositing User: Noorul Farina Arifin
Date Deposited: 17 Feb 2023 01:58
Last Modified: 17 Feb 2023 01:58
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