Spacer Cations Dictate Photoinduced Phase Segregation in 2D Mixed Halide Perovskites

Mathew, Preethi S.; DuBose, Jeffrey T.; Cho, Junsang; Kamat, Prashant V.

doi:10.1021/acsenergylett.1c01015

Spacer Cations Dictate Photoinduced Phase Segregation in 2D Mixed Halide Perovskites

Journal Article · Tue Jun 15 00:00:00 EDT 2021 · ACS Energy Letters

DOI:https://doi.org/10.1021/acsenergylett.1c01015· OSTI ID:1830763

Mathew, Preethi S. ^[1]; ^[2]; Cho, Junsang ^[2]; ^[2]

Univ. of Notre Dame, IN (United States); Univ of Notre Dame
Univ. of Notre Dame, IN (United States)

The spacer cation in two-dimensional (2D) Ruddlesden–Popper lead halide perovskites dictates photoinduced phase segregation. Halide ion segregation under steady-state irradiation of single-layer (n = 1) 2D perovskites is seen when butylammonium (BA) is used as the spacer cation, whereas it is essentially absent when BA is replaced with phenethylammonium (PEA).

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Notre Dame, IN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: FC02-04ER15533; SC0014334

OSTI ID:: 1830763

Alternate ID(s):: OSTI ID: 1909216

Journal Information:: ACS Energy Letters, Journal Name: ACS Energy Letters Journal Issue: 7 Vol. 6; ISSN 2380-8195

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Spacer Cations Dictate Photoinduced Phase Segregation in 2D Mixed Halide Perovskites

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