TY - JOUR
T1 - High Efficiency Perovskite-Silicon Tandem Solar Cells
T2 - Effect of Surface Coating versus Bulk Incorporation of 2D Perovskite
AU - Duong, The
AU - Pham, Huyen
AU - Kho, Teng Choon
AU - Phang, Pheng
AU - Fong, Kean Chern
AU - Yan, Di
AU - Yin, Yanting
AU - Peng, Jun
AU - Mahmud, Md Arafat
AU - Gharibzadeh, Saba
AU - Nejand, Bahram Abdollahi
AU - Hossain, Ihteaz M.
AU - Khan, Motiur Rahman
AU - Mozaffari, Naeimeh
AU - Wu, Yi Liang
AU - Shen, Heping
AU - Zheng, Jianghui
AU - Mai, Haoxin
AU - Liang, Wensheng
AU - Samundsett, Chris
AU - Stocks, Matthew
AU - McIntosh, Keith
AU - Andersson, Gunther G.
AU - Lemmer, Uli
AU - Richards, Bryce S.
AU - Paetzold, Ulrich W.
AU - Ho-Ballie, Anita
AU - Liu, Yun
AU - Macdonald, Daniel
AU - Blakers, Andrew
AU - Wong-Leung, Jennifer
AU - White, Thomas
AU - Weber, Klaus
AU - Catchpole, Kylie
PY - 2020/3/1
Y1 - 2020/3/1
N2 - Mixed-dimensional perovskite solar cells combining 3D and 2D perovskites have recently attracted wide interest owing to improved device efficiency and stability. Yet, it remains unclear which method of combining 3D and 2D perovskites works best to obtain a mixed-dimensional system with the advantages of both types. To address this, different strategies of combining 2D perovskites with a 3D perovskite are investigated, namely surface coating and bulk incorporation. It is found that through surface coating with different aliphatic alkylammonium bulky cations, a Ruddlesden–Popper “quasi-2D” perovskite phase is formed on the surface of the 3D perovskite that passivates the surface defects and significantly improves the device performance. In contrast, incorporating those bulky cations into the bulk induces the formation of the pure 2D perovskite phase throughout the bulk of the 3D perovskite, which negatively affects the crystallinity and electronic structure of the 3D perovskite framework and reduces the device performance. Using the surface-coating strategy with n-butylammonium bromide to fabricate semitransparent perovskite cells and combining with silicon cells in four-terminal tandem configuration, 27.7% tandem efficiency with interdigitated back contact silicon bottom cells (size-unmatched) and 26.2% with passivated emitter with rear locally diffused silicon bottom cells is achieved in a 1 cm2 size-matched tandem.
AB - Mixed-dimensional perovskite solar cells combining 3D and 2D perovskites have recently attracted wide interest owing to improved device efficiency and stability. Yet, it remains unclear which method of combining 3D and 2D perovskites works best to obtain a mixed-dimensional system with the advantages of both types. To address this, different strategies of combining 2D perovskites with a 3D perovskite are investigated, namely surface coating and bulk incorporation. It is found that through surface coating with different aliphatic alkylammonium bulky cations, a Ruddlesden–Popper “quasi-2D” perovskite phase is formed on the surface of the 3D perovskite that passivates the surface defects and significantly improves the device performance. In contrast, incorporating those bulky cations into the bulk induces the formation of the pure 2D perovskite phase throughout the bulk of the 3D perovskite, which negatively affects the crystallinity and electronic structure of the 3D perovskite framework and reduces the device performance. Using the surface-coating strategy with n-butylammonium bromide to fabricate semitransparent perovskite cells and combining with silicon cells in four-terminal tandem configuration, 27.7% tandem efficiency with interdigitated back contact silicon bottom cells (size-unmatched) and 26.2% with passivated emitter with rear locally diffused silicon bottom cells is achieved in a 1 cm2 size-matched tandem.
KW - 2D perovskites
KW - perovskite solar cells
KW - perovskite-silicon tandem
KW - surface coating
KW - wide bandgap
UR - http://www.scopus.com/inward/record.url?scp=85078843424&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/ARC/FT180100302
U2 - 10.1002/aenm.201903553
DO - 10.1002/aenm.201903553
M3 - Article
AN - SCOPUS:85078843424
SN - 1614-6832
VL - 10
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 9
M1 - 1903553
ER -