Passivating silicon-based hybrid solar cells through tuning PbI2 content of perovskite coatings

Chia Yun Chen, Ta Cheng Wei, Yen Chuan Lai, Tsai Ching Lee

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)


Silicon-nanowire (SiNW) based hybrid solar cells generally suffered from severe defect trapping initiated from high density of dangling bonds at nanowire surfaces and thus, passivation process was highly demanded for suppressing the surface recombination of photogenerated carriers. In this study, the strategy was proposed for minimizing the possible charge recombination by using perovskite layer as passivation design while tuning the excess PbI2 amount as well as employing the antisolvent treatment. The results indicated the uniform incorporation of perovskite coatings possessing 5% of excess PbI2 prepared under chlorobenzene treatment with aligned SiNW arrays demonstrated the improved cell efficiency of 14.1%, approximately 1.4 times beyond the un-passivated solar cells. This was supported by the increased carrier lifetime as well as reduction of charge-transfer resistance that greatly benefited the improvement of open-circuit voltage and fill factor; in addition, the superior light absorption of hybrid perovskite/SiNW nanostructures was evidenced through experimental and simulated examinations that introduced the additional gain of short-circuit current density. Such hybrid design shed light on the realization of all-solution processed photovoltaic devices, and might further offer an innovative approach for other advanced optoelectronic applications.

期刊Applied Surface Science
出版狀態Published - 2020 5月 1

All Science Journal Classification (ASJC) codes

  • 一般化學
  • 凝聚態物理學
  • 一般物理與天文學
  • 表面和介面
  • 表面、塗料和薄膜


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