title: Enhanced photocurrent production by bio-dyes of photosynthetic macromolecules on designed TiO2 film.
abstract: The macromolecular pigment-protein complex has the merit of high efficiency for light-energy capture and transfer after long-term photosynthetic evolution. Here bio-dyes of A. platensis photosystem I (PSI) and spinach light-harvesting complex II (LHCII) are spontaneously sensitized on three types of designed TiO2 films, to assess the effects of pigment-protein complex on the performance of bio-dye sensitized solar cells (SSC). Adsorption models of bio-dyes are proposed based on the 3D structures of PSI and LHCII, and the size of particles and inner pores in the TiO2 film. PSI shows its merit of high efficiency for captured energy transfer, charge separation and transfer in the electron transfer chain (ETC), and electron injection from FB to the TiO2 conducting band. After optimization, the best short current (JSC) and photoelectric conversion efficiency (η) of PSI-SSC and LHCII-SSC are 1.31 mA cm(-2) and 0.47%, and 1.51 mA cm(-2) and 0.52%, respectively. The potential for further improvement of this PSI based SSC is significant and could lead to better utilization of solar energy.
authors: 1] State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, China [2] Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China.
authors: Daoyong
authors: D
authors: Yu
authors: Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China.
authors: Mengfei
authors: M
authors: Wang
authors: Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China.
authors: Guoliang
authors: G
authors: Zhu
authors: 1] State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, China [2] Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China.
authors: Baosheng
authors: B
authors: Ge
authors: Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China.
authors: Shuang
authors: S
authors: Liu
authors: 1] State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, China [2] Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China.
authors: Fang
authors: F
authors: Huang
mesh_terms: D000327:Adsorption; D004566:Electrodes; D045342:Light-Harvesting Protein Complexes / Q000378:metabolism; D010788:Photosynthesis; D045331:Photosystem I Protein Complex / Q000378:metabolism; D010860:Pigments, Biological / Q000096:biosynthesis*; D014025:Titanium
chemical_list: D045342:Light-Harvesting Protein Complexes; D045331:Photosystem I Protein Complex; D010860:Pigments, Biological; C009495:titanium dioxide; D014025:Titanium