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Nanocrystalline TiO2 solar cells sensitized with chlorophyll and ZnSe quantum dots

CHUNG-CHIEH WANG1, LUNG-CHIEN CHEN1,* , TIEN-CHUN WANG1

Affiliation

  1. Department of Electro-optical Engineering, National Taipei University of Technology, 1, sec.3, Chung-Hsiao E. Rd., Taipei 106, Taiwan, Republic of China

Abstract

The present paper reports on the fabrication of nanocrystalline TiO2 solar cells sensitized with chlorophyll and ZnSe quantum dots (QDs). The performance of solar cells was observed by changing the amount of ZnSe QDs. TiO2 solar cells with 5 wt% ZnSe QDs exhibited optimum results. The measured parameters were the short-circuit current density (Jsc), the open-circuit voltage (Voc), the maximum output power density (Pm), the fill factor (FF), and the power conversion efficiencies (η), which had values of were 5.88 mA/cm2, 0.475 V, 1.17 mW/cm2, 0.419, and 1.17 %, respectively, under AM 1.5 illumination. TiO2 solar cells sensitized with ZnSe QDs have higher conversion efficiency than TiO2 solar cells sensitized with PbS or InAs QDs..

Keywords

ZnSe; TiO2, Solar cells, Quantum dot.

Submitted at: May 10, 2009
Accepted at: June 28, 2009

Citation

CHUNG-CHIEH WANG, LUNG-CHIEN CHEN, TIEN-CHUN WANG, Nanocrystalline TiO2 solar cells sensitized with chlorophyll and ZnSe quantum dots, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 6, pp. 834-837 (2009)