Improved charge extraction in inverted perovskite solar cells with dual-site-binding ligands

Inverted (pin) perovskite solar cells (PSCs) afford improved operating stability in comparison to their nip counterparts but have lagged in power conversion efficiency (PCE). The energetic losses responsible for this PCE deficit in pin PSCs occur primarily at the interfaces between the perovskite an...

Full description

Saved in:
Bibliographic Details
Published in:Science (American Association for the Advancement of Science) Vol. 384; no. 6692; p. 189
Main Authors: Chen, Hao, Liu, Cheng, Xu, Jian, Maxwell, Aidan, Zhou, Wei, Yang, Yi, Zhou, Qilin, Bati, Abdulaziz S R, Wan, Haoyue, Wang, Zaiwei, Zeng, Lewei, Wang, Junke, Serles, Peter, Liu, Yuan, Teale, Sam, Liu, Yanjiang, Saidaminov, Makhsud I, Li, Muzhi, Rolston, Nicholas, Hoogland, Sjoerd, Filleter, Tobin, Kanatzidis, Mercouri G, Chen, Bin, Ning, Zhijun, Sargent, Edward H
Format: Journal Article
Language:English
Published: United States 12.04.2024
ISSN:1095-9203, 1095-9203
Online Access:Get more information
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Inverted (pin) perovskite solar cells (PSCs) afford improved operating stability in comparison to their nip counterparts but have lagged in power conversion efficiency (PCE). The energetic losses responsible for this PCE deficit in pin PSCs occur primarily at the interfaces between the perovskite and the charge-transport layers. Additive and surface treatments that use passivating ligands usually bind to a single active binding site: This dense packing of electrically resistive passivants perpendicular to the surface may limit the fill factor in pin PSCs. We identified ligands that bind two neighboring lead(II) ion (Pb ) defect sites in a planar ligand orientation on the perovskite. We fabricated pin PSCs and report a certified quasi-steady state PCE of 26.15 and 24.74% for 0.05- and 1.04-square centimeter illuminated areas, respectively. The devices retain 95% of their initial PCE after 1200 hours of continuous 1 sun maximum power point operation at 65°C.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1095-9203
1095-9203
DOI:10.1126/science.adm9474