Enhancing and Extinguishing the Different Emission Features of 2D (EA1-xFAx)4Pb3Br10 Perovskite Films

Kennard, Rhiannon M.; Dahlman, Clayton J.; Morgan, Emily E.; Chung, Juil; Cotts, Benjamin L.; Kincaid, Joseph A.; DeCrescent, Ryan A.; Stone, Kevin H.; Panuganti, Shobhana; Mohtashami, Yahya; Mao, Lingling; Schaller, Richard D.; Salleo, Alberto; Kanatzidis, Mercouri G.; Schuller, Jon A.; Seshadri, Ram; Chabinyc, Michael L.

doi:10.1002/adom.202200547

Enhancing and Extinguishing the Different Emission Features of 2D (EA_1-xFA_x)₄Pb₃Br₁₀ Perovskite Films

Journal Article · Sun Jun 12 00:00:00 EDT 2022 · Advanced Optical Materials

DOI:https://doi.org/10.1002/adom.202200547· OSTI ID:1889842

^[1]; ^[2]; ^[2]; Chung, Juil ^[2]; Cotts, Benjamin L. ^[3]; ^[2]; DeCrescent, Ryan A. ^[2]; Stone, Kevin H. ^[4]; ^[5]; ^[2]; Mao, Lingling ^[2]; ^[5]; Salleo, Alberto ^[3]; Kanatzidis, Mercouri G. ^[5]; Schuller, Jon A. ^[2]; ^[2]; ^[2]

University of California, Santa Barbara, CA (United States); SLAC
University of California, Santa Barbara, CA (United States)
Stanford University, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Northwestern University, Evanston, IL (United States)

We report 2D hybrid perovskites are attractive for optoelectronic devices. In thin films, the color of optical emission and the texture of crystalline domains are often difficult to control. Here, a method for extinguishing or enhancing different emission features is demonstrated for the family of 2D Ruddlesden–Popper perovskites (EA_1-xFA_x)₄Pb₃Br₁₀ (EA = ethylammonium, FA = formamidinium). When grown from aqueous hydrobromic acid, crystals of (EA1_-xFA_x)₄Pb₃Br₁₀ retain all the emission features of their parent compound, (EA)₄Pb₃Br₁₀. Surpris-ingly, when grown from dimethylformamide (DMF), an emission feature, likely self-trapped exciton (STE), near 2.7 eV is missing. Extinction of this feature is correlated with DMF being incorporated between the 2D Pb-Br sheets, forming (EA_1-xFA_x)₄Pb₃Br₁₀∙(DMF)_y. Without FA, films grown from DMF form (EA)₄Pb₃Br₁₀, retain little solvent, and have strong emission near 2.7 eV. Slowing the kinetics of film growth strengthens a different emission feature, likely a different type of STE, which is much broader and present in all compositions. Films of (EA_1-xFA_x)₄Pb₃Br₁₀∙(DMF)_y have large, micron-sized domains and homogeneous orientation of the semiconducting sheets, resulting in low elec-tronic disorder near the absorption edge. The ability to selectively strengthen or extinguish different emission features in films of (EA_1-xFA_x)₄Pb₃Br₁₀∙(DMF)_y reveals a pathway to tune the emission color in these compounds.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Lemont, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: DURIP ARO; National Defense Science and Engineering Graduate; National Science Foundation; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-76SF00515; SC0012541; SC0019273

OSTI ID:: 1889842

Alternate ID(s):: OSTI ID: 1872166
OSTI ID: 1923089

Journal Information:: Advanced Optical Materials, Journal Name: Advanced Optical Materials Journal Issue: 17 Vol. 10; ISSN 2195-1071

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Journal Article · Tue Jul 25 20:00:00 EDT 2017 · Journal of the American Chemical Society · OSTI ID:1599737

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2D halide perovskites
36 MATERIALS SCIENCE
crystals
emission
exciton–phonon coupling
self-trapped excitons
solvents
thin films

Enhancing and Extinguishing the Different Emission Features of 2D (EA1-xFAx)4Pb3Br10 Perovskite Films

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Enhancing and Extinguishing the Different Emission Features of 2D (EA_1-xFA_x)₄Pb₃Br₁₀ Perovskite Films