Technoeconomically competitive four-terminal perovskite/graphenesilicon tandem solar cells with over 20% efficiency  

作　　者：Pengjie Hang Jingkun Cong Ge Li Lijian Zuo Chenxia Kan Biao Li Jiangsheng Xie Yuxin Yao Ying Wang Hongzheng Chen Deren Yang Xuegong Yu 

机构地区：[1]State Key Laboratory of Silicon Materials and School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China [2]State Key Laboratory of Silicon Materials,MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2021年第12期477-483,I0011,共8页能源化学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (62025403, 61721005);the Zhejiang Province Science and Technology Plan (2018C01047)。

摘　　要：Perovskite/Silicon(PS) tandem solar cells have attracted much interest over recent years. However, the most popular crystalline silicon solar cells utilized in tandems require complicated fabrication processes mainly including texturization, diffusion, passivation and metallization, which takes up much cost in photovoltaic market. Here, we report a facile graphene/silicon(Gr/Si) solar cell featuring of lowtemperature( 200 °C) processing and an efficiency of 13.56%. For reducing the heat dissipation loss of high energy photon, the perovskite solar cell(PSC) with a wide band gap of 1.76 e V was adopted as the top cell for the tandem. To reduce the loss of parasitic absorption in hole transport layers(HTLs),thickness of Spiro-OMe TAD is re-optimized by compromising the efficiency and the optical transmittance of the devices. As a result, the semitransparent top perovskite solar cell yields a highest efficiency of13.35%. Furthermore, we firstly achieved a low-temperature-processed four-terminal(4-T) perovskite/graphene-silicon(PGS) heterojunction tandem solar cell with the efficiency of 20.37%. The levelized cost of electricity(LCOE) of PGS 4-T modules were estimated to a competitive price, exhibiting much greater potential for practical application compared to that of PS 4-T modules.

关 键 词：Perovskite/graphene-silicon tandem sola cells Low temperature TRANSMITTANCE Technoeconomic competitiveness 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB34[一般工业技术—材料科学与工程]