High-Performance Bismuth Antimony Telluride Thermoelectric Membrane on Curved and Flexible Supports

Fu, Liangwei1,2; Park, Kwansu1; Kim, Sang-Il3; Kim, Bongju1; Song, Hyun Yong1; Choi, Wooseon1; Kim, Young-Min1,4; Hwang, Jae-Yeol5; Lee, Kyu Hyoung6; Kim, Sung Wng1,4

2021-07-09

10.1021/acsenergylett.1c00801

ACS Energy Letters   影响因子和分区

2380-8195

Separation of epitaxial thin films on a growth substrate and transfer onto other materials for functional heterostructures have boosted the transformative impact on science and technology. However, this scheme has proved challenging in thin-film thermoelectrics but promises a vast range of applications beyond the limited device configurations of bulk thermoelectrics. Here, the high-quality Bi0.5Sb1.5Te3 (BST) epitaxial thin film on a sapphire substrate grown by spontaneous van der Waals epitaxy (vdWE) is exfoliated and transferred onto versatile materials, creating high-performance thermoelectric membranes. Unprecedented millimeter-size vdWE BST membranes are produced by etching a pseudomorphic Te monolayer on the surface of a sapphire substrate in dilute HF solution. The intact exfoliation and direct transfer for vdWE BST membranes maintain the high-quality crystallinity, resulting in the remarkable zT value (similar to 0.9 at 300 K). These results represent the realization of long-pursued but undemonstrated high-performance thin-film thermoelectrics, paving the way for the design and fabrication of arbitrarily shaped thermoelectric devices.

SCI ; EI

英语

其他

Samsung Research Funding & Incubation Center of Samsung Electronics[SRFC-MA1701-05] ; Institute for Basic Science[IBS-R011-D1]

Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000672746800003

AMER CHEMICAL SOC

Web of Science

1.Sungkyunkwan Univ, Dept Energy Sci, Suwon 16419, South Korea
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Univ Seoul, Dept Mat Sci & Engn, Seoul 02504, South Korea
4.Inst Basic Sci, Ctr Integrated Nanostruct Phys, Suwon 16419, South Korea
5.Pukyong Natl Univ, Dept Phys, Busan 48513, South Korea
6.Yonsei Univ, Dept Mat Sci & Engn, Seoul 03722, South Korea

Fu, Liangwei,Park, Kwansu,Kim, Sang-Il,et al. High-Performance Bismuth Antimony Telluride Thermoelectric Membrane on Curved and Flexible Supports[J]. ACS Energy Letters,2021,6(7).

Fu, Liangwei.,Park, Kwansu.,Kim, Sang-Il.,Kim, Bongju.,Song, Hyun Yong.,...&Kim, Sung Wng.(2021).High-Performance Bismuth Antimony Telluride Thermoelectric Membrane on Curved and Flexible Supports.ACS Energy Letters,6(7).

Fu, Liangwei,et al."High-Performance Bismuth Antimony Telluride Thermoelectric Membrane on Curved and Flexible Supports".ACS Energy Letters 6.7(2021).