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Bilayer Chlorophyll-Based Biosolar Cells Inspired from the Z-Scheme Process of Oxygenic Photosynthesis
ACS Energy Letters ( IF 22.0 ) Pub Date : 2018-06-22 00:00:00 , DOI: 10.1021/acsenergylett.8b00797
Shengnan Duan 1 , Chunxiang Dall’Agnese 1 , Gang Chen 1 , Xiao-Feng Wang 1 , Hitoshi Tamiaki 2 , Yuya Yamamoto 3 , Toshitaka Ikeuchi 3 , Shin-ichi Sasaki 2, 3
Affiliation  

The Z-scheme process in chlorophyll-based natural photosynthesis shows the pathway of photoinduced electron transport from photosystem II (PSII) to photosystem I (PSI) through an electron transfer chain. Inspired by the interesting Z-scheme of oxygenic photosynthesis, we imitated the dual photosynthesis systems into biosolar cells (BSCs). The device structure fabricated here is ITO/ZnO/Chl-A/Chl-D1, -D2, -D3, or -D4 (Chl-Ds)/MoO3/Ag. Due to higher HOMO/LUMO energy levels of Chl-A than those of Chl-Ds, the sublayer Chl-A corresponds to PSI, and the upper layer Chl-Ds are equivalent to PSII, leading to double photoexcited electron transfer from Chl-Ds to Chl-A. The energy alignment of the photoactive layers here is in conflict with the traditional comprehension of photovoltaic devices. Interestingly, such an uncommon device can still work well. A power conversion efficiency of 1.30% was reached based on the Chl-A/Chl-D4 device under standard AM1.5 illumination.

中文翻译:

双层叶绿素为基础的太阳能电池,受氧光合作用的Z方案过程启发。

基于叶绿素的自然光合作用中的Z方案过程显示了光诱导电子通过电子转移链从光系统II(PSII)到光系统I(PSI)的传输路径。受氧光合作用有趣的Z方案的启发,我们将双光合作用系统模拟为生物太阳能电池(BSC)。此处制造的器件结构为ITO / ZnO / Chl-A / Chl-D1,-D2,-D3或-D4(Chl-Ds)/ MoO 3/银 由于Chl-A的HOMO / LUMO能级高于Chl-Ds的能级,因此子层Chl-A对应于PSI,而上层Chl-Ds相当于PSII,导致Chl-Ds进行了两次光激发电子转移到Chl-A。在此,光敏层的能量取向与光伏器件的传统理解相冲突。有趣的是,这种罕见的设备仍然可以正常工作。基于Chl-A / Chl-D4设备在标准AM1.5照明下达到1.30%的功率转换效率。
更新日期:2018-06-22
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