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Growth of single-crystalline Bi₂Te₃ hexagonal nanoplates with and without single nanopores during temperature-controlled solvothermal synthesis.

ABSTRACT: Bismuth telluride (Bi₂Te₃) is a promising thermoelectric material for applications near room temperature. To increase the thermoelectric performance of this material, its dimensions and thermal transport should be decreased. Two-dimensional nanoplates with nanopores are an ideal structure because thermal transport is disrupted by nanopores. We prepared Bi₂Te₃ nanoplates with single nanopores by a solvothermal synthesis and investigated their structural and crystallographic properties. The nanoplates synthesized at a lower reaction temperature (190?°C) developed single nanopores (approximately 20?nm in diameter), whereas the nanoplates synthesized at a higher reaction temperature (200?°C) did not have nanopores. A crystal growth mechanism is proposed based on the experimental observations.

SUBMITTER: Hosokawa Y

PROVIDER: S-EPMC6658664 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Growth of single-crystalline Bi2Te3 hexagonal nanoplates with and without single nanopores during temperature-controlled solvothermal synthesis.

Hosokawa Yuichi Y Tomita Koji K Takashiri Masayuki M

Scientific reports 20190725 1

Bismuth telluride (Bi2Te3) is a promising thermoelectric material for applications near room temperature. To increase the thermoelectric performance of this material, its dimensions and thermal transport should be decreased. Two-dimensional nanoplates with nanopores are an ideal structure because thermal transport is disrupted by nanopores. We prepared Bi2Te3 nanoplates with single nanopores by a solvothermal synthesis and investigated their structural ...[more]

PMID: 31346223

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