Improved Performance of Solid-State Grätzel Solar Cell by Cosensitization of Quantum Dot and Dye
LI Bin, WANG Li-Duo, LI Jiang-Wei, QIU Yong
Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Beijing 100084
Department of Chemistry, Tsinghua University, Beijing 100084
Improved Performance of Solid-State Grätzel Solar Cell by Cosensitization of Quantum Dot and Dye
LI Bin;WANG Li-Duo;LI Jiang-Wei;QIU Yong
Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Beijing 100084
Department of Chemistry, Tsinghua University, Beijing 100084
Abstract：We report a new cosensitization utilizing quantum dot (QD) PbS and Cis-(SCN)2Bis(2,2'-bipyridyl-4,4'-dicarboxylate) ruthenium (N3) dye on the nanoporous TiO2 film. Solid-state Grätzel solar cells with the cosensitized films show an improved overall efficiency by 200% relative to the cells assembled with only N3 sensitization and an extremely high open-circuit voltage of 840 mV, and a fill factor of 70.5%. Back reaction characteristics of the above cells are also investigated, demonstrating a great suppression of recombination due to cosensitization. It seems that the cosensitization also facilitates the electron injection into the conduction band of TiO2.
(Optoelectronic device characterization, design, and modeling)
引用本文:
LI Bin;WANG Li-Duo;LI Jiang-Wei;QIU Yong. Improved Performance of Solid-State Grätzel Solar Cell by Cosensitization of Quantum Dot and Dye[J]. 中国物理快报, 2004, 21(7): 1391-1393.
LI Bin, WANG Li-Duo, LI Jiang-Wei, QIU Yong. Improved Performance of Solid-State Grätzel Solar Cell by Cosensitization of Quantum Dot and Dye. Chin. Phys. Lett., 2004, 21(7): 1391-1393.
2004, Vol. 21 
