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Title: Nickel-Doped Graphite and Fusible Alloy Bilayer Back Electrode for Vacuum-Free Perovskite Solar Cells
With the rapid development of perovskite solar cells (PSCs), lowering fabrication costs for PSCs has become a prominent challenge for commercialization. At present, gold is commonly used as the back metal electrode in state-of-the-art n-i-p structured PSCs due to its compatible work function, chemical inertness, and high conductivity. However, the high cost of gold and the expensive and time-consuming vacuum-based thin-film coating facilities may impede large-scale industrialization of PSCs. Here, we report a bilayer back electrode configuration consisting of an Ni-doped natural graphite layer with a fusible Bi-In alloy. This back electrode can be deposited in a vacuum-free approach and enables PSCs with a power conversion efficiency of 21.0%. These inexpensive materials and facile ambient fabrication techniques provide an appealing disruptive solution to low-cost PSC industrialization.  more » « less
Award ID(s):
1806152
PAR ID:
10420380
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ; ; ;
Editor(s):
Nam-Gyu Park
Date Published:
Journal Name:
ACS Energy Letters
Volume:
8
ISSN:
2380-8195
Page Range / eLocation ID:
2940 to 2945
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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