Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (6): 1279-1283.doi: 10.1007/s40242-020-0060-z

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Comparison of Physical Isolation on Large Active Area Perovskite Solar Cells

GAO Liguo1, YAN Yeling1, LI Yang1, MA Tingli2,3   

  1. 1. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, P. R. China;
    2. Department of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, P. R. China;
    3. Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, Fukuoka 808-0196, Japan
  • Received:2019-03-12 Revised:2020-04-22 Online:2020-12-01 Published:2020-12-03
  • Contact: LI Yang, MA Tingli E-mail:chyangli@dlut.edu.cn;tinglima@life.kyutech.ac.jp
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos. 51772039, 21703027, 21902021, 51972293), the Fundamental Research Funds for the Central Universities, China[No.DUT16RC(4)77], and the Grant-in-Aid for Scientific Research (KAKENHI) Program, Japan(B, Grant No.19H02818).

Abstract: To reduce the quadratic scaling of the series resistance(Rs) and sheet resistance(Rst) of the devices, physical isolation of the large area devices into small pieces has been proven to be a reliable and cost-efficient patterning technique. In this paper, we got an interesting result that the physical isolation did not show obvious effect on the photovoltaic performance of perovskite solar cells(PSCs) when fixing the active area. Three different isolation types, unetched ITO, etched ITO, and laser etching whole devices, have been induced to investigate the physical isolation roles. The results show that the electrons and holes could be collected efficiently in active area for all the isolation types. The proposed mechanism illustrates that the nonradiative recombination and recombination of electrons and hole in inactive area do not influence the performance of devices. This work may open a new way for the commercialization of PSCs by reducing the complex process and the etching costs.

Key words: Perovskite solar cell, Isolation type, Laser etching, Large area, Series resistance, Physical isolation