27%-Efficiency Four-Terminal Perovskite/Silicon Tandem Solar Cells by Sandwiched Gold Nanomesh

Ziyu Wang, Xuejie Zhu, Shengnan Zuo, Ming Chen, Cong Zhang, Chenyu Wang, Xiaodong Ren, Zhou Yang, Zhike Liu, Xixiang Xu, Qing Chang, Shaofei Yang, Fanying Meng, Zhengxin Liu, Ningyi Yuan, Jianning Ding, Shengzhong Liu, Dong Yang

Research output: Contribution to journalArticlepeer-review

100 Scopus citations


Multijunction/tandem solar cells have naturally attracted great attention because they are not subject to the Shockley–Queisser limit. Perovskite solar cells are ideal candidates for the top cell in multijunction/tandem devices due to the high power conversion efficiency (PCE) and relatively low voltage loss. Herein, sandwiched gold nanomesh between MoO3 layers is designed as a transparent electrode. The large surface tension of MoO3 effectively improves wettability for gold, resulting in Frank–van der Merwe growth to produce an ultrathin gold nanomesh layer, which guarantees not only excellent conductivity but also great optical transparency, which is particularly important for a multijunction/tandem solar cell. The top MoO3 layer reduces the reflection at the gold layer to further increase light transmission. As a result, the semitransparent perovskite cell shows an 18.3% efficiency, the highest reported for this type of device. When the semitransparent perovskite device is mechanically stacked with a heterojunction silicon solar cell of 23.3% PCE, it yields a combined efficiency of 27.0%, higher than those of both the sub-cells. This breakthrough in elevating the efficiency of semitransparent and multijunction/tandem devices can help to break the Shockley–Queisser limit.

Original languageEnglish (US)
Article number1908298
JournalAdvanced Functional Materials
Issue number4
StatePublished - Jan 1 2020

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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