Interface engineering using Y2O3 scaffold to enhance the thermoelectric performance of CsSnI3 thin film

Ajay Kumar Baranwal; Shrikant Saini; Zhen Wang; Daisuke Hirotani; Tomohide Yabuki; Satoshi Iikubo; Koji Miyazaki; Shuzi Hayase

doi:10.1016/j.orgel.2019.105488

Interface engineering using Y₂O₃ scaffold to enhance the thermoelectric performance of CsSnI₃ thin film

Ajay Kumar Baranwal, Shrikant Saini, Zhen Wang, Daisuke Hirotani, Tomohide Yabuki, Satoshi Iikubo, Koji Miyazaki, Shuzi Hayase

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Solution processed Cesium Tin halide perovskites (CsSnI₃) are inorganic crystal to be explored for thermoelectric applications. Here, we report a novel strategy using an inorganic Y₂O₃ scaffold to improve the thermoelectric performance. The additional Y₂O₃ influence the CsSnI₃ crystal growth and favor more conducting behavior with intrinsic defects (Sn⁴⁺) formation. Therefore, the resulting solution processed composite film Y₂O₃/CsSnI₃ show much improved electrical conductivity of ~310 S/cm as compared to ~98 S/cm of pristine CsSnI₃ film. Under the influence of Y₂O₃, the resulting phonon scattering path was enhanced significantly due to formed defects/vacancy and reduced CsSnI₃ crystal size, which showed a reduction in thermal conductivity from 0.74 W/mK to 0.28 W/mK. This work paves a new paradigm to improve the thermoelectric performance of solution based thermoelectric generator.

Original language	English
Article number	105488
Journal	Organic Electronics
Volume	76
DOIs	https://doi.org/10.1016/j.orgel.2019.105488
Publication status	Published - Jan 2020
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry
Chemistry(all)
Electrical and Electronic Engineering
Biomaterials

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10.1016/j.orgel.2019.105488

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title = "Interface engineering using Y2O3 scaffold to enhance the thermoelectric performance of CsSnI3 thin film",

abstract = "Solution processed Cesium Tin halide perovskites (CsSnI3) are inorganic crystal to be explored for thermoelectric applications. Here, we report a novel strategy using an inorganic Y2O3 scaffold to improve the thermoelectric performance. The additional Y2O3 influence the CsSnI3 crystal growth and favor more conducting behavior with intrinsic defects (Sn4+) formation. Therefore, the resulting solution processed composite film Y2O3/CsSnI3 show much improved electrical conductivity of ~310 S/cm as compared to ~98 S/cm of pristine CsSnI3 film. Under the influence of Y2O3, the resulting phonon scattering path was enhanced significantly due to formed defects/vacancy and reduced CsSnI3 crystal size, which showed a reduction in thermal conductivity from 0.74 W/mK to 0.28 W/mK. This work paves a new paradigm to improve the thermoelectric performance of solution based thermoelectric generator.",

author = "Baranwal, {Ajay Kumar} and Shrikant Saini and Zhen Wang and Daisuke Hirotani and Tomohide Yabuki and Satoshi Iikubo and Koji Miyazaki and Shuzi Hayase",

note = "Funding Information: This work was supported by CREST-Japan Science and Technology Agency , Grant Id no. YA2019003 . Funding Information: This work was supported by CREST-Japan Science and Technology Agency, Grant Id no. YA2019003. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

month = jan,

doi = "10.1016/j.orgel.2019.105488",

language = "English",

volume = "76",

journal = "Organic Electronics",

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T1 - Interface engineering using Y2O3 scaffold to enhance the thermoelectric performance of CsSnI3 thin film

AU - Baranwal, Ajay Kumar

AU - Saini, Shrikant

AU - Wang, Zhen

AU - Hirotani, Daisuke

AU - Yabuki, Tomohide

AU - Iikubo, Satoshi

AU - Miyazaki, Koji

AU - Hayase, Shuzi

N1 - Funding Information: This work was supported by CREST-Japan Science and Technology Agency , Grant Id no. YA2019003 . Funding Information: This work was supported by CREST-Japan Science and Technology Agency, Grant Id no. YA2019003. Publisher Copyright: © 2019 Elsevier B.V.

PY - 2020/1

Y1 - 2020/1

N2 - Solution processed Cesium Tin halide perovskites (CsSnI3) are inorganic crystal to be explored for thermoelectric applications. Here, we report a novel strategy using an inorganic Y2O3 scaffold to improve the thermoelectric performance. The additional Y2O3 influence the CsSnI3 crystal growth and favor more conducting behavior with intrinsic defects (Sn4+) formation. Therefore, the resulting solution processed composite film Y2O3/CsSnI3 show much improved electrical conductivity of ~310 S/cm as compared to ~98 S/cm of pristine CsSnI3 film. Under the influence of Y2O3, the resulting phonon scattering path was enhanced significantly due to formed defects/vacancy and reduced CsSnI3 crystal size, which showed a reduction in thermal conductivity from 0.74 W/mK to 0.28 W/mK. This work paves a new paradigm to improve the thermoelectric performance of solution based thermoelectric generator.

AB - Solution processed Cesium Tin halide perovskites (CsSnI3) are inorganic crystal to be explored for thermoelectric applications. Here, we report a novel strategy using an inorganic Y2O3 scaffold to improve the thermoelectric performance. The additional Y2O3 influence the CsSnI3 crystal growth and favor more conducting behavior with intrinsic defects (Sn4+) formation. Therefore, the resulting solution processed composite film Y2O3/CsSnI3 show much improved electrical conductivity of ~310 S/cm as compared to ~98 S/cm of pristine CsSnI3 film. Under the influence of Y2O3, the resulting phonon scattering path was enhanced significantly due to formed defects/vacancy and reduced CsSnI3 crystal size, which showed a reduction in thermal conductivity from 0.74 W/mK to 0.28 W/mK. This work paves a new paradigm to improve the thermoelectric performance of solution based thermoelectric generator.

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Interface engineering using Y₂O₃ scaffold to enhance the thermoelectric performance of CsSnI₃ thin film

Abstract

All Science Journal Classification (ASJC) codes

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