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Title: Ultralow thermal conductivity in all-inorganic halide perovskites

Controlling the flow of thermal energy is crucial to numerous applications ranging from microelectronic devices to energy storage and energy conversion devices. Here in this paper, we report ultralow lattice thermal conductivities of solution-synthesized, single-crystalline all-inorganic halide perovskite nanowires composed of CsPbI 3 (0.45 ± 0.05 W·m -1 ·K -1), CsPbBr 3 (0.42 ± 0.04 W·m -1·K -1), and CsSnI 3 (0.38 ± 0.04 W·m -1 ·K -1). We attribute this ultralow thermal conductivity to the cluster rattling mechanism, wherein strong optical–acoustic phonon scatterings are driven by a mixture of 0D/1D/2D collective motions. Remarkably, CsSnI 3 possesses a rare combination of ultralow thermal conductivity, high electrical conductivity (282 S·cm -1), and high hole mobility (394 cm 2 ·V -1 ·s -1). The unique thermal transport properties in all-inorganic halide perovskites hold promise for diverse applications such as phononic and thermoelectric devices. Furthermore, the insights obtained from this work suggest an opportunity to discover low thermal conductivity materials among unexplored inorganic crystals beyond caged and layered structures.
Authors:
ORCiD logo [1] ;  [2] ;  [3] ;  [3] ;  [4] ;  [3] ;  [4] ;  [4] ;  [5] ;  [2] ;  [6]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Materials Science and Engineering
  3. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  4. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Kavli Energy NanoScience Inst., Berkeley, CA (United States)
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 114; Journal Issue: 33; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; halide perovskite; thermal conductivity; thermal transport; nanowire; thermoelectrics
OSTI Identifier:
1373422
Alternate Identifier(s):
OSTI ID: 1421807

Lee, Woochul, Li, Huashan, Wong, Andrew B., Zhang, Dandan, Lai, Minliang, Yu, Yi, Kong, Qiao, Lin, Elbert, Urban, Jeffrey J., Grossman, Jeffrey C., and Yang, Peidong. Ultralow thermal conductivity in all-inorganic halide perovskites. United States: N. p., Web. doi:10.1073/pnas.1711744114.
Lee, Woochul, Li, Huashan, Wong, Andrew B., Zhang, Dandan, Lai, Minliang, Yu, Yi, Kong, Qiao, Lin, Elbert, Urban, Jeffrey J., Grossman, Jeffrey C., & Yang, Peidong. Ultralow thermal conductivity in all-inorganic halide perovskites. United States. doi:10.1073/pnas.1711744114.
Lee, Woochul, Li, Huashan, Wong, Andrew B., Zhang, Dandan, Lai, Minliang, Yu, Yi, Kong, Qiao, Lin, Elbert, Urban, Jeffrey J., Grossman, Jeffrey C., and Yang, Peidong. 2017. "Ultralow thermal conductivity in all-inorganic halide perovskites". United States. doi:10.1073/pnas.1711744114.
@article{osti_1373422,
title = {Ultralow thermal conductivity in all-inorganic halide perovskites},
author = {Lee, Woochul and Li, Huashan and Wong, Andrew B. and Zhang, Dandan and Lai, Minliang and Yu, Yi and Kong, Qiao and Lin, Elbert and Urban, Jeffrey J. and Grossman, Jeffrey C. and Yang, Peidong},
abstractNote = {Controlling the flow of thermal energy is crucial to numerous applications ranging from microelectronic devices to energy storage and energy conversion devices. Here in this paper, we report ultralow lattice thermal conductivities of solution-synthesized, single-crystalline all-inorganic halide perovskite nanowires composed of CsPbI3 (0.45 ± 0.05 W·m-1 ·K-1), CsPbBr3 (0.42 ± 0.04 W·m-1·K-1), and CsSnI3 (0.38 ± 0.04 W·m-1 ·K-1). We attribute this ultralow thermal conductivity to the cluster rattling mechanism, wherein strong optical–acoustic phonon scatterings are driven by a mixture of 0D/1D/2D collective motions. Remarkably, CsSnI3 possesses a rare combination of ultralow thermal conductivity, high electrical conductivity (282 S·cm-1), and high hole mobility (394 cm2 ·V-1 ·s-1). The unique thermal transport properties in all-inorganic halide perovskites hold promise for diverse applications such as phononic and thermoelectric devices. Furthermore, the insights obtained from this work suggest an opportunity to discover low thermal conductivity materials among unexplored inorganic crystals beyond caged and layered structures.},
doi = {10.1073/pnas.1711744114},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 33,
volume = 114,
place = {United States},
year = {2017},
month = {7}
}

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