Dye-Sensitized Solar Cells Based on the Principles and Materials of Photosynthesis: Mechanisms of Suppression and Enhancement of Photocurrent and Conversion Efficiency

International Journal of Molecular Sciences

Yasushi Koyama¹  Takeshi Miki¹  Xiao-Feng Wang¹ 

[1] Faculty of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan

关键词: dye-sensitized solar cells (DSSCs);    photosynthesis;    carotenoids;    chlorophylls;    pheophorbides;    singlet-triplet annihilation;    electron transfer;    energy transfer;    electron injection;    charge recombination;    co-sensitization;   

DOI  :  10.3390/ijms10114575

来源: mdpi

【 摘 要 】

Attempts have been made to develop dye-sensitized solar cells based on the principles and materials of photosynthesis: We first tested photosynthetic pigments, carotenoids (Cars), chlorophylls (Chls) and their derivatives, to find sensitizers showing reasonable performance (photocurrent and conversion efficiency). We then tried to introduce the principles of photosynthesis, including electron transfer and energy transfer from Car to Phe a. Also, we tried co-sensitization using the pheophorbide (Phe) a and Chl c₂ pair which further enhanced the performance of the component sensitizers as follows: J_sc = 9.0 + 13.8 → 14.0 mA cm⁻² and η = 3.4 + 4.6 → 5.4%.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.