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제126회 대한화학회 학술발표회 및 총회 Ca-doped CuS Counter Electrodes for High Efficiency Quantum Dot Sensitized Solar Cells

등록일
2020년 9월 9일 09시 18분 21초
접수번호
0902
발표코드
ELEC.P-520 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 21일(수) 17:00~17:30
발표형식
포스터
발표분야
Electrochemistry
저자 및
공동저자
Mohammed Panthakkal abdul muthalif, Youngson Choe1,*
Chemical Engineering, Pusan National University, India
1Pusan National University, Korea
The present study reports the incorporation of calcium (Ca) into the CuS counter electrodes (CEs) in order to modify the photovoltaic performance of quantum dot-sensitized solar cells (QDSSCs). Ca-doped CuS CEs were prepared by the chemical bath deposition (CBD) method on FTO substrate. For the Ca-doped CuS thin films, copper nitrate and thioacetamide were used as cationic and anionic precursors. Calcium nitrate tetrahydrate was used as doping material. The changes observed in the diffraction patterns suggest that Ca dopant can introduce increased disorder into CuS material structure. EDX analysis was employed to determine the elemental identification and the results confirmed the presence of Cu, S, and Ca on the FTO glass substrate. Electro chemical impedance spectroscopy results displays that Ca-doped CuS CEs have greater electrocatalytic activity and charge transport capacity than that of bare CuS. Photovoltaic performance studies demonstrate that 20% Ca-doped CuS CE based QDSSCs exhibit superior power conversion efficiency (η) of 4.92%, short circuit current density of 15.47 mA cm-2, open-circuit photovoltage of 0.611 V, and fill factor (FF) of 0.521 under illumination of one sun.

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