High performance solid-state thermoelectric energy conversion via inorganic metal halide perovskites under tailored mechanical deformation

Yan, Lifu; Zhao, Lingling; Yang, Guiting; Liu, Shichao; Liu, Yang; Lin, Shangchao

doi:10.1007/s11708-022-0831-y

Front. Energy

2022

DOI: 10.1007/s11708-022-0831-y

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High performance solid-state thermoelectric energy conversion via inorganic metal halide perovskites under tailored mechanical deformation

Lifu Yan

Lingling Zhao

Guiting Yang³

et al.

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Cited by 12 publications

References 73 publications

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Diffuson‐Dominated and Ultra Defect‐Tolerant Two‐Channel Thermal Transport in Hybrid Halide Perovskites

Cai,

Lin,

Ahmadian‐Yazdi

et al. 2023

Adv Funct Materials

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Organic‐inorganic hybrid halide perovskites show a unique two‐channel thermal transport through propagons and diffusons, largely affecting other energy carriers for opto‐ and thermoelectric applications. Taking CH3NH3PbI3 as a prototype, the impact of iodine vacancy point defects on the two‐channel thermal transport is investigated using theoretical calculations and experimental validations. This work finds that iodine vacancies suppress the thermal transport in the propagon channel significantly, but less in the diffuson channel. This results in a weaker reduction of the total thermal conductivity (TC) than that predicted by the classical Klemens model. The TC reduction in the diffuson channel is mainly attributed to the declined vibrational density of states. Moreover, low‐frequency diffusons transformed from propagons compensate the reduction of TC in the diffuson channel, resulting in a dominant contribution from the diffuson channel to the total TC, which is 55% to 85% for 0% to 6% vacancy concentration. CH3NH3PbI3 also shows ultra‐defect‐tolerant diffusonic thermal transport, ≈1–2 orders of magnitude lower than diamond in the defect sensitivity factor. This work shows both scientific insights into the new two‐channel thermal transport mechanism in complex material systems with disorder, and technological significance on halide perovskites for solar cell, light‐emitting diode, thermoelectric, and memristor applications.

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Diffuson‐Dominated and Ultra Defect‐Tolerant Two‐Channel Thermal Transport in Hybrid Halide Perovskites

Cai,

Lin,

Ahmadian‐Yazdi

et al. 2023

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

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Unveiling heavy heterovalent doping-modulated microstructure and thermoelectric performance in bulk hybrid perovskite single crystals

Ahmadian-Yazdi,

Lin,

Cai

2024

Chemical Engineering Journal

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Synergy between gelatin hydrogels and electrodes for adjustable and thermally stable ionic thermoelectric supercapacitors

Xu,

Lin,

Yin

et al. 2024

Chemical Engineering Journal

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High performance solid-state thermoelectric energy conversion via inorganic metal halide perovskites under tailored mechanical deformation

Cited by 12 publications

References 73 publications

Diffuson‐Dominated and Ultra Defect‐Tolerant Two‐Channel Thermal Transport in Hybrid Halide Perovskites

Diffuson‐Dominated and Ultra Defect‐Tolerant Two‐Channel Thermal Transport in Hybrid Halide Perovskites

Unveiling heavy heterovalent doping-modulated microstructure and thermoelectric performance in bulk hybrid perovskite single crystals

Synergy between gelatin hydrogels and electrodes for adjustable and thermally stable ionic thermoelectric supercapacitors

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