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Title: Enhanced yield-mobility products in hybrid halide Ruddlesden–Popper compounds with aromatic ammonium spacers

Abstract

We show hybrid halide Ruddlesden–Popper compounds are related to three-dimensional hybrid AMX3 perovskites (e.g. where A is a monovalent cation, M is a divalent metal cation, and X is a halogen) with the general formula L2An–1MnX3n+1 where L is a monovalent spacer cation. The crystal structure comprises perovskite-like layers separated by organic cation spacers. Here two Ruddlesden–Popper compounds with a conjugated cation, 2-(4-biphenyl)ethylammonium (BPEA) prepared by solvothermal and solvent evaporation techniques are reported. The structures of the two compounds: (BPEA) 2PbI 4 and (BPEA) 2(CH 3NH 3)Pb 2I 7, were solved by X-ray crystallography. The aromatic rings of the BPEA groups are well-separated in the organic layers leading to optical properties comparable to n = 1 and 2 hybrid halide Ruddlesden–Popper compounds with simpler alkyl ammonium cations. The ambient stability of both compounds over time was also confirmed by powder X-ray diffraction. Finally, the transient photoconductance, measured by time-resolved microwave conductivity, show that the compounds have maximum yield-mobility products respectively of 0.07 cm 2 V –1 s –1 and 1.11 cm 2 V –1 s –1 for (BPEA) 2PbI 4 and (BPEA) 2(CH 3NH 3)Pb 2I 7, both slightly enhanced over what has been measured for compounds with simpler (more » n-butylammonium) spacer cations.« less

Authors:
ORCiD logo [1];  [2];  [2];  [2]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of California, Santa Barbara, CA (United States). Dept. of Materials
  2. Univ. of California, Santa Barbara, CA (United States). Dept. of Chemistry and Biochemistry
Publication Date:
Research Org.:
Univ. of California, Santa Barbara, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
OSTI Identifier:
1594803
Alternate Identifier(s):
OSTI ID: 1560335
Grant/Contract Number:  
SC0012541; DMR-1720256; SC-0012541
Resource Type:
Accepted Manuscript
Journal Name:
Dalton Transactions
Additional Journal Information:
Journal Volume: 48; Journal Issue: 37; Journal ID: ISSN 1477-9226
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Venkatesan, Naveen R., Mahdi, Ali, Barraza, Brian, Wu, Guang, Chabinyc, Michael L., and Seshadri, Ram. Enhanced yield-mobility products in hybrid halide Ruddlesden–Popper compounds with aromatic ammonium spacers. United States: N. p., 2019. Web. doi:10.1039/C9DT03074C.
Venkatesan, Naveen R., Mahdi, Ali, Barraza, Brian, Wu, Guang, Chabinyc, Michael L., & Seshadri, Ram. Enhanced yield-mobility products in hybrid halide Ruddlesden–Popper compounds with aromatic ammonium spacers. United States. doi:10.1039/C9DT03074C.
Venkatesan, Naveen R., Mahdi, Ali, Barraza, Brian, Wu, Guang, Chabinyc, Michael L., and Seshadri, Ram. Thu . "Enhanced yield-mobility products in hybrid halide Ruddlesden–Popper compounds with aromatic ammonium spacers". United States. doi:10.1039/C9DT03074C.
@article{osti_1594803,
title = {Enhanced yield-mobility products in hybrid halide Ruddlesden–Popper compounds with aromatic ammonium spacers},
author = {Venkatesan, Naveen R. and Mahdi, Ali and Barraza, Brian and Wu, Guang and Chabinyc, Michael L. and Seshadri, Ram},
abstractNote = {We show hybrid halide Ruddlesden–Popper compounds are related to three-dimensional hybrid AMX3 perovskites (e.g. where A is a monovalent cation, M is a divalent metal cation, and X is a halogen) with the general formula L2An–1MnX3n+1 where L is a monovalent spacer cation. The crystal structure comprises perovskite-like layers separated by organic cation spacers. Here two Ruddlesden–Popper compounds with a conjugated cation, 2-(4-biphenyl)ethylammonium (BPEA) prepared by solvothermal and solvent evaporation techniques are reported. The structures of the two compounds: (BPEA)2PbI4 and (BPEA)2(CH3NH3)Pb2I7, were solved by X-ray crystallography. The aromatic rings of the BPEA groups are well-separated in the organic layers leading to optical properties comparable to n = 1 and 2 hybrid halide Ruddlesden–Popper compounds with simpler alkyl ammonium cations. The ambient stability of both compounds over time was also confirmed by powder X-ray diffraction. Finally, the transient photoconductance, measured by time-resolved microwave conductivity, show that the compounds have maximum yield-mobility products respectively of 0.07 cm2 V–1 s–1 and 1.11 cm2 V–1 s–1 for (BPEA)2PbI4 and (BPEA)2(CH3NH3)Pb2I7, both slightly enhanced over what has been measured for compounds with simpler (n-butylammonium) spacer cations.},
doi = {10.1039/C9DT03074C},
journal = {Dalton Transactions},
number = 37,
volume = 48,
place = {United States},
year = {2019},
month = {9}
}

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