Staff View: Unidentified major p-type source in SnSe: Multivacancies

Unidentified major p-type source in SnSe: Multivacancies

Tin selenide (SnSe) is considered a robust candidate for thermoelectric applications due to its very high thermoelectric figure of merit, ZT, with values of 2.6 in p-type and 2.8 in n-type single crystals. Sn has been replaced with various lower group dopants to achieve successful p-type doping in S...

Full description

Saved in:

Bibliographic Details
Main Authors:	Van, Quang Nguyen, Thi, Ly Trinh, Cheng, Chang
Format:	Bài trích
Language:	English
Published:	Springer 2022
Subjects:	Applied physics Electrical and electronic engineering
Online Access:	https://www.nature.com/articles/s41427-022-00393-5 https://dlib.phenikaa-uni.edu.vn/handle/PNK/5962 https://doi.org/10.1038/s41427-022-00393-5
Tags:	Add Tag No Tags, Be the first to tag this record!

id	oai:localhost:PNK-5962
record_format	dspace
spelling	oai:localhost:PNK-59622022-08-17T05:54:51Z Unidentified major p-type source in SnSe: Multivacancies Van, Quang Nguyen Thi, Ly Trinh Cheng, Chang Applied physics Electrical and electronic engineering Tin selenide (SnSe) is considered a robust candidate for thermoelectric applications due to its very high thermoelectric figure of merit, ZT, with values of 2.6 in p-type and 2.8 in n-type single crystals. Sn has been replaced with various lower group dopants to achieve successful p-type doping in SnSe with high ZT values. A known, facile, and powerful alternative way to introduce a hole carrier is to use a natural single Sn vacancy, VSn. Through transport and scanning tunneling microscopy studies, we discovered that VSn are dominant in high-quality (slow cooling rate) SnSe single crystals, while multiple vacancies, Vmulti, are dominant in low-quality (high cooling rate) single crystals. Surprisingly, both VSn and Vmulti help to increase the power factors of SnSe, whereas samples with dominant VSn have superior thermoelectric properties in SnSe single crystals. Additionally, the observation that Vmulti are good p-type sources observed in relatively low-quality single crystals is useful in thermoelectric applications because polycrystalline SnSe can be used due to its mechanical strength; this substance is usually fabricated at very high cooling speeds 2022-07-13T02:00:07Z 2022-07-13T02:00:07Z 2022 Bài trích https://www.nature.com/articles/s41427-022-00393-5 https://dlib.phenikaa-uni.edu.vn/handle/PNK/5962 https://doi.org/10.1038/s41427-022-00393-5 en Springer
institution	Digital Phenikaa
collection	Digital Phenikaa
language	English
topic	Applied physics Electrical and electronic engineering
spellingShingle	Applied physics Electrical and electronic engineering Van, Quang Nguyen Thi, Ly Trinh Cheng, Chang Unidentified major p-type source in SnSe: Multivacancies
description	Tin selenide (SnSe) is considered a robust candidate for thermoelectric applications due to its very high thermoelectric figure of merit, ZT, with values of 2.6 in p-type and 2.8 in n-type single crystals. Sn has been replaced with various lower group dopants to achieve successful p-type doping in SnSe with high ZT values. A known, facile, and powerful alternative way to introduce a hole carrier is to use a natural single Sn vacancy, VSn. Through transport and scanning tunneling microscopy studies, we discovered that VSn are dominant in high-quality (slow cooling rate) SnSe single crystals, while multiple vacancies, Vmulti, are dominant in low-quality (high cooling rate) single crystals. Surprisingly, both VSn and Vmulti help to increase the power factors of SnSe, whereas samples with dominant VSn have superior thermoelectric properties in SnSe single crystals. Additionally, the observation that Vmulti are good p-type sources observed in relatively low-quality single crystals is useful in thermoelectric applications because polycrystalline SnSe can be used due to its mechanical strength; this substance is usually fabricated at very high cooling speeds
format	Bài trích
author	Van, Quang Nguyen Thi, Ly Trinh Cheng, Chang
author_facet	Van, Quang Nguyen Thi, Ly Trinh Cheng, Chang
author_sort	Van, Quang Nguyen
title	Unidentified major p-type source in SnSe: Multivacancies
title_short	Unidentified major p-type source in SnSe: Multivacancies
title_full	Unidentified major p-type source in SnSe: Multivacancies
title_fullStr	Unidentified major p-type source in SnSe: Multivacancies
title_full_unstemmed	Unidentified major p-type source in SnSe: Multivacancies
title_sort	unidentified major p-type source in snse: multivacancies
publisher	Springer
publishDate	2022
url	https://www.nature.com/articles/s41427-022-00393-5 https://dlib.phenikaa-uni.edu.vn/handle/PNK/5962 https://doi.org/10.1038/s41427-022-00393-5
_version_	1751856290737422336
score	8.891053

Unidentified major p-type source in SnSe: Multivacancies

Similar Items