TY - JOUR
T1 - Engineering ligand reactivity enables high-temperature operation of stable perovskite solar cells
AU - Park, So Min
AU - Wei, Mingyang
AU - Xu, Jian
AU - Atapattu, Harindi R.
AU - Eickemeyer, Felix T.
AU - Darabi, Kasra
AU - Grater, Luke
AU - Yang, Yi
AU - Liu, Cheng
AU - Teale, Sam
AU - Chen, Bin
AU - Chen, Hao
AU - Wang, Tonghui
AU - Zeng, Lewei
AU - Maxwell, Aidan
AU - Wang, Zaiwei
AU - Rao, Keerthan R.
AU - Cai, Zhuoyun
AU - Zakeeruddin, Shaik M.
AU - Pham, Jonathan T.
AU - Risko, Chad M.
AU - Amassian, Aram
AU - Kanatzidis, Mercouri G.
AU - Graham, Kenneth R.
AU - Grätzel, Michael
AU - Sargent, Edward H.
N1 - Publisher Copyright:
© 2023 American Association for the Advancement of Science. All rights reserved.
PY - 2023/7/14
Y1 - 2023/7/14
N2 - Perovskite solar cells (PSCs) consisting of interfacial two- and three-dimensional heterostructures that incorporate ammonium ligand intercalation have enabled rapid progress toward the goal of uniting performance with stability. However, as the field continues to seek ever-higher durability, additional tools that avoid progressive ligand intercalation are needed to minimize degradation at high temperatures. We used ammonium ligands that are nonreactive with the bulk of perovskites and investigated a library that varies ligand molecular structure systematically. We found that fluorinated aniliniums offer interfacial passivation and simultaneously minimize reactivity with perovskites. Using this approach, we report a certified quasi-steady-state power-conversion efficiency of 24.09% for inverted-structure PSCs. In an encapsulated device operating at 85°C and 50% relative humidity, we document a 1560-hour T85 at maximum power point under 1-sun illumination.
AB - Perovskite solar cells (PSCs) consisting of interfacial two- and three-dimensional heterostructures that incorporate ammonium ligand intercalation have enabled rapid progress toward the goal of uniting performance with stability. However, as the field continues to seek ever-higher durability, additional tools that avoid progressive ligand intercalation are needed to minimize degradation at high temperatures. We used ammonium ligands that are nonreactive with the bulk of perovskites and investigated a library that varies ligand molecular structure systematically. We found that fluorinated aniliniums offer interfacial passivation and simultaneously minimize reactivity with perovskites. Using this approach, we report a certified quasi-steady-state power-conversion efficiency of 24.09% for inverted-structure PSCs. In an encapsulated device operating at 85°C and 50% relative humidity, we document a 1560-hour T85 at maximum power point under 1-sun illumination.
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U2 - 10.1126/science.adi4107
DO - 10.1126/science.adi4107
M3 - Article
C2 - 37440655
AN - SCOPUS:85164845610
SN - 0036-8075
VL - 381
SP - 209
EP - 215
JO - Science
JF - Science
IS - 6654
ER -