Dual–Interface–Reinforced Flexible Perovskite Solar Cells for Enhanced Performance and Mechanical Reliability

Dai, Zhenghong; Li, Shunran; Liu, Xing; Chen, Min; Athanasiou, Christos E.; Sheldon, Brian W.; Gao, Huajian; Guo, Peijun; Padture, Nitin P.

doi:10.1002/adma.202205301

Dual–Interface–Reinforced Flexible Perovskite Solar Cells for Enhanced Performance and Mechanical Reliability

Journal Article · Fri Sep 23 00:00:00 EDT 2022 · Advanced Materials

DOI:https://doi.org/10.1002/adma.202205301· OSTI ID:1959914

Dai, Zhenghong ^[1]; Li, Shunran ^[2]; Liu, Xing ^[3]; Chen, Min ^[3]; Athanasiou, Christos E. ^[3]; Sheldon, Brian W. ^[3]; Gao, Huajian ^[4]; Guo, Peijun ^[2]; ^[3]

Brown Univ., Providence, RI (United States); Brown University
Yale Univ., New Haven, CT (United States); Yale Univ., West Haven, CT (United States)
Brown Univ., Providence, RI (United States)
Brown Univ., Providence, RI (United States); Nanyang Technological Univ. (Singapore); Inst. of High Performance Computing (Singapore)

Two key interfaces in flexible perovskite solar cells (f-PSCs) are mechanically reinforced simultaneously: one between the electron-transport layer (ETL) and the 3D metal-halide perovskite (MHP) thin film using self-assembled monolayer (SAM), and the other between the 3D-MHP thin film and the hole-transport layer (HTL) using an in situ grown low-dimensional (LD) MHP capping layer. The interfacial mechanical properties are measured and modeled. This rational interface engineering results in the enhancement of not only the mechanical properties of both interfaces but also their optoelectronic properties holistically. As a result, the new class of dual-interface-reinforced f-PSCs has an unprecedented combination of the following three important performance parameters: high power-conversion efficiency (PCE) of 21.03% (with reduced hysteresis), improved operational stability of 1000 h T90 (duration at 90% initial PCE retained), and enhanced mechanical reliability of 10 000 cycles n88 (number of bending cycles at 88% initial PCE retained). Furthermore, the scientific underpinnings of these synergistic enhancements are elucidated.

View Accepted Manuscript (DOE)

Research Organization:: Brown Univ., Providence, RI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); U.S. Office of Naval Research; U.S. National Science Foundation; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; U.S. Air Force Office of Scientific Research

Grant/Contract Number:: EE0009511; SC0018113

OSTI ID:: 1959914

Alternate ID(s):: OSTI ID: 1894165

Journal Information:: Advanced Materials, Journal Name: Advanced Materials Journal Issue: 47 Vol. 34; ISSN 0935-9648

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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