Assembly of CdTe Quantum Dots and Photosystem II Multi- layer Films with Enhanced Photocurrent  

作　　者：Peng Cai Yi Jia Xiyun Feng Jiao Li Junbai Li 

机构地区：[1]Beijing National Laboratory for Molecule Sciences, CAS Key Lab of Colloid, lnterface and Chemical Thermody- namics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China [2]Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China

出　　处：《Chinese Journal of Chemistry》2017年第6期881-885,共5页中国化学（英文版）

基　　金：This work was supported financially by the National Natural Science Foundation of China （Nos. 21433010, 21320102004, 21321063） and the National Basic Research Program of China （973 Program, Nos. 2013CB932800, 2013YQ160551）

摘　　要：Photosystem II （PSII） is a photoactive protein that can drive water oxidation under light irradiation. Recently, PSII has been broadly investigated with the high demand on the bioenergy. Here, we demonstrate a facile approach for the fabrication of a photoactive electrode by the integration of PSII with quantum dots （QDs）/polyelectrolyte multilayers. The assembled QDs and PSII film with a polyelectrolyte based substrate via layer-by-layer assembly can remain the photoactivity of the PSII and broaden the absorption spectrum of PSII to produce a high photocur- rent yield. The co-assembly exhibits an obviously enhanced photocurrent under UV light irradiation. The proposed strategy can be considered for the reference and usage of PSII toward the solar energy conversion.Photosystem II （PSII） is a photoactive protein that can drive water oxidation under light irradiation. Recently, PSII has been broadly investigated with the high demand on the bioenergy. Here, we demonstrate a facile approach for the fabrication of a photoactive electrode by the integration of PSII with quantum dots （QDs）/polyelectrolyte multilayers. The assembled QDs and PSII film with a polyelectrolyte based substrate via layer-by-layer assembly can remain the photoactivity of the PSII and broaden the absorption spectrum of PSII to produce a high photocur- rent yield. The co-assembly exhibits an obviously enhanced photocurrent under UV light irradiation. The proposed strategy can be considered for the reference and usage of PSII toward the solar energy conversion.

关 键 词：photosystem II quantum dots solar energy conversion layer-by-layer assembly energy transfer 

分 类 号：O471.1[理学—半导体物理] TB383[理学—物理]