Monolithic Perovskite-Carrier Selective Contact Silicon Tandem Solar Cells Using Molybdenum Oxide as a Hole Selective Layer

Hoyoung Song, Changhyun Lee, Jiyeon Hyun, Sang-Won Lee, Dongjin Choi, Dowon Pyun, Jiyeon Nam, Seok-Hyun Jeong, Jiryang Kim, Soohyun Bae, Hyunju Lee, Yoonmook Kang, Donghwan Kim and Hae-Seok Lee
Additional contact information
Hoyoung Song: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Changhyun Lee: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Jiyeon Hyun: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Sang-Won Lee: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Dongjin Choi: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Dowon Pyun: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Jiyeon Nam: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Seok-Hyun Jeong: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Jiryang Kim: KU-KIST Green School, Graduate School of Energy and Environment, Korea University, Seoul 02841, Korea
Soohyun Bae: National Agenda Research Division, Korea Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Korea
Hyunju Lee: Meiji Renewable Energy Laboratory, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki 214-8571, Japan
Yoonmook Kang: KU-KIST Green School, Graduate School of Energy and Environment, Korea University, Seoul 02841, Korea
Donghwan Kim: Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
Hae-Seok Lee: KU-KIST Green School, Graduate School of Energy and Environment, Korea University, Seoul 02841, Korea

Energies, 2021, vol. 14, issue 11, 1-9

Abstract: Monolithic perovskite–silicon tandem solar cells with MoO x hole selective contact silicon bottom solar cells show a power conversion efficiency of 8%. A thin 15 nm-thick MoO x contact to n-type Si was used instead of a standard p + emitter to collect holes and the SiO x /n + poly-Si structure was deposited on the other side of the device for direct tunneling of electrons and this silicon bottom cell structure shows ~15% of power conversion efficiency. 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 MoO x in tandem cells and this tandem structure shows the power conversion efficiency of 3.3%. This research has confirmed that the MoO x layer simultaneously acts as a passivation layer and a hole collecting layer in this tandem structure.

Keywords: perovskite–silicon tandem solar cell; monolithic tandem cell; carrier selective contact; molybdenum oxide; hole selective layer (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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