Role of Compositional Tuning on Thermoelectric Parameters of Hybrid Halide Perovskites
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ArticleKAUST Department
KAUST Solar CenterKAUST Solar Center (KSC)
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant Number
OSR-CRG2018-3737Date
2019-05-31Online Publication Date
2019-05-31Print Publication Date
2019-06-20Embargo End Date
2020-05-31Permanent link to this record
http://hdl.handle.net/10754/656055
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Halide perovskites are emerging as a new class of materials for thermoelectric applications owing to their low thermal conductivity and high Seebeck coefficient (thermopower). In this work, the thermoelectric parameters of vapor-deposited hybrid perovskite thin films are explored for the first time. We establish a relationship between the chemical composition and thermoelectric properties of sequentially vapor-deposited CH3NH3PbI3 films. A composition-dependent grain size and in-plane electrical conductivity evolution is observed and its influence on thermoelectric properties is analyzed. An ultralow in-plane thermal conductivity of 0.32 ± 0.03 W m–1 K–1 at room temperature is recorded for CH3NH3PbI3 using a chip-based 3ω method. Thermal conductivity measurement of a series of CH3NH3PbI3 films reveals that the thermal transport is governed by the Pb–I lattice at room temperature. Furthermore, n- and p-type CH3NH3PbI3 films achieved by compositional tuning exhibit high negative (6500 μV/K) and positive (5500 μV/K) thermopower.Citation
Haque, M. A., Nugraha, M. I., Paleti, S. H. K., & Baran, D. (2019). Role of Compositional Tuning on Thermoelectric Parameters of Hybrid Halide Perovskites. The Journal of Physical Chemistry C, 123(24), 14928–14933. doi:10.1021/acs.jpcc.9b02830Sponsors
This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award no. OSR-CRG2018-3737.Publisher
American Chemical Society (ACS)Additional Links
http://pubs.acs.org/doi/10.1021/acs.jpcc.9b02830ae974a485f413a2113503eed53cd6c53
10.1021/acs.jpcc.9b02830