TY - JOUR
T1 - Enhanced Efficiency and Stability for the Inverted High-Bandgap Perovskite Solar Cell via Bottom Passivation Strategy
AU - Chang, Li Chun
AU - Dinh Bui, Anh
AU - Huang, Keqing
AU - Kremer, Felipe
AU - Brink, Frank
AU - Wang, Wei
AU - Haggren, Anne
AU - Mayon, Azul Osorio
AU - Ta, Xuan Minh Chau
AU - Duan, Leiping
AU - Lem, Olivier Lee Cheong
AU - Hou, Yihui
AU - Nguyen, Dang Thuan
AU - Tabi, Grace Dansoa
AU - Zhan, Hualin
AU - Ahmad, Viqar
AU - Duong, The
AU - white, Thomas
AU - Walter, Daniel
AU - Weber, Klaus
AU - Catchpole, Kylie
AU - Shen, Heping
N1 - Publisher Copyright:
© 2024 The Author(s). Solar RRL published by Wiley-VCH GmbH.
PY - 2024/10
Y1 - 2024/10
N2 - The bottom perovskite with the hole transport layer (HTL) in inverted perovskite solar cells (PSCs) interface has received little attention due to challenges like interlayer dissolution during perovskite deposition. And voids at the perovskite/HTL interface can degrade cell performance. This work introduces a two-dimensional (2D) perovskite layer between the perovskite and poly (N, N′-bis-4-butylphenyl-N, N′-bisphenyl) benzidine (Poly-TPD) HTL using a mixed solution of 4-methylphenethylammonium chloride (4M-PEA-Cl), methylammonium iodide (MA-I), and Poly(9,9-bis(3′-(N,N-dimethyl)-N-ethylammoinium-propyl-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene))dibromide (PFN-Br). The amine functional groups in the organic salts improved HTL wettability, resulting in a void-free interface. 4M-PEA-Cl, with its strong electron-withdrawing benzene ring, outperformed other amine-containing salts in passivating undercoordinated Pb2+ ions. Incorporating this hybrid passivation layer in PSCs resulted in a 1.8% absolute increase in power conversion efficiency (PCE) to 19.1% with 1.68 eV perovskite bandgap. Additionally, the passivated PSCs demonstrated enhanced operational stability, retaining 91% of their initial efficiency after 800 hours of continuous 1-sun illumination, compared to 84.7% for the control sample.
AB - The bottom perovskite with the hole transport layer (HTL) in inverted perovskite solar cells (PSCs) interface has received little attention due to challenges like interlayer dissolution during perovskite deposition. And voids at the perovskite/HTL interface can degrade cell performance. This work introduces a two-dimensional (2D) perovskite layer between the perovskite and poly (N, N′-bis-4-butylphenyl-N, N′-bisphenyl) benzidine (Poly-TPD) HTL using a mixed solution of 4-methylphenethylammonium chloride (4M-PEA-Cl), methylammonium iodide (MA-I), and Poly(9,9-bis(3′-(N,N-dimethyl)-N-ethylammoinium-propyl-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene))dibromide (PFN-Br). The amine functional groups in the organic salts improved HTL wettability, resulting in a void-free interface. 4M-PEA-Cl, with its strong electron-withdrawing benzene ring, outperformed other amine-containing salts in passivating undercoordinated Pb2+ ions. Incorporating this hybrid passivation layer in PSCs resulted in a 1.8% absolute increase in power conversion efficiency (PCE) to 19.1% with 1.68 eV perovskite bandgap. Additionally, the passivated PSCs demonstrated enhanced operational stability, retaining 91% of their initial efficiency after 800 hours of continuous 1-sun illumination, compared to 84.7% for the control sample.
KW - inverted perovskite solar cell
KW - poly-TPD
KW - wide-bandgap
UR - http://www.scopus.com/inward/record.url?scp=85202628932&partnerID=8YFLogxK
U2 - 10.1002/solr.202400391
DO - 10.1002/solr.202400391
M3 - Article
AN - SCOPUS:85202628932
SN - 2367-198X
VL - 8
JO - Solar RRL
JF - Solar RRL
IS - 19
M1 - 2400391
ER -