Monolithic perovskite-silicon tandem cells using molybdenum oxide hole selective contact silicon solar cells as bottom structures

Changhyun Lee, Hoyoung Song, Jiyeon Hyun, Sang Won Lee, Dongjin Choi, Dowon Pyun, Jiyeon Nam, Jiryang Kim, Soohyun Bae, Hyunju Lee, Yoon Mook Kang, Hae Seok Lee, Donghwan Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Monolithic perovskite-silicon tandem solar cells using MoOx hole selective contact silicon cell as bottom structure shows a power conversion efficiency of 5.7%. A thin (15nm in thickness) MoOx contact to n-type Si was used instead of a standard p+ emitter to collect holes and the SiOx/n+ poly-Si structure was applied on the rear of the device for direct tunneling of electrons and blocking holes. With this bottom silicon structure, 14% of devices were manufactured. With this bottom carrier selective silicon cell, tin oxide, and subsequent perovskite structure were deposited to fabricate monolithic tandem solar cells. Monolithic tandem structure without ITO interlayer was also compared to confirm the role of MoOx in tandem cells and this tandem structure shows the power conversion efficiency of 4%. Through this experiment, we have confirmed that the MoOx layer play roles as a passivation layer, hole collecting material, and recombination layer at the same time in the tandem structure.

Original languageEnglish
Title of host publication2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2177-2179
Number of pages3
ISBN (Electronic)9781665419222
DOIs
Publication statusPublished - 2021 Jun 20
Event48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States
Duration: 2021 Jun 202021 Jun 25

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Conference

Conference48th IEEE Photovoltaic Specialists Conference, PVSC 2021
Country/TerritoryUnited States
CityFort Lauderdale
Period21/6/2021/6/25

Keywords

  • carrier-selective contact cell
  • molybdenum hole selective contact
  • Perovskite-silicon tandem solar cell

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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