Ultrahigh-Sensitivity and Fast-Speed Ultraviolet Pulsed Photodetectors Based on the Transverse Thermoelectric Effect of Inclined PbBi2Te4 Thin Films

IF 6.5 1区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Photonics Pub Date : 2024-11-28 DOI:10.1021/acsphotonics.4c01602

Mingjing Chen, Chenming Yue, Haixu Liu, Xin Qian, Lide Fang, Shufang Wang

{"title":"Ultrahigh-Sensitivity and Fast-Speed Ultraviolet Pulsed Photodetectors Based on the Transverse Thermoelectric Effect of Inclined PbBi2Te4 Thin Films","authors":"Mingjing Chen, Chenming Yue, Haixu Liu, Xin Qian, Lide Fang, Shufang Wang","doi":"10.1021/acsphotonics.4c01602","DOIUrl":null,"url":null,"abstract":"The transverse thermoelectric (TTE) effect of inclined thin films, originating from the anisotropy of the Seebeck coefficient of the films, has received extensive attention owing to its great application potential in self-powered photodetectors and heat flux sensors. In this paper, a novel TTE ultraviolet pulsed photodetector was constructed by using a high-quality c-axis inclined PbBi2Te4 thin film prepared on an SrTiO3 substrate via a pulsed laser deposition technique. The device exhibited very high voltage sensitivity Rs as well as ultrafast response time, with an Rs of about 25.75 V/mJ and rise time of about 18 ns. In addition, the device showed long-term working stability in air after coating a thin layer of Al2O3 and perfect linearity with an R-squared coefficient close to 1. The results demonstrate that PbBi2Te4, a compound with large anisotropy of the Seebeck coefficient, is a new promising material for fabricating high-performance TTE-based ultraviolet pulsed photodetectors.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"23 1","pages":""},"PeriodicalIF":6.5000,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Photonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1021/acsphotonics.4c01602","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The transverse thermoelectric (TTE) effect of inclined thin films, originating from the anisotropy of the Seebeck coefficient of the films, has received extensive attention owing to its great application potential in self-powered photodetectors and heat flux sensors. In this paper, a novel TTE ultraviolet pulsed photodetector was constructed by using a high-quality c-axis inclined PbBi₂Te₄ thin film prepared on an SrTiO₃ substrate via a pulsed laser deposition technique. The device exhibited very high voltage sensitivity R_s as well as ultrafast response time, with an R_s of about 25.75 V/mJ and rise time of about 18 ns. In addition, the device showed long-term working stability in air after coating a thin layer of Al₂O₃ and perfect linearity with an R-squared coefficient close to 1. The results demonstrate that PbBi₂Te₄, a compound with large anisotropy of the Seebeck coefficient, is a new promising material for fabricating high-performance TTE-based ultraviolet pulsed photodetectors.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

求助全文

约1分钟内获得全文去求助

来源期刊

ACS Photonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

11.90

自引率

5.70%

发文量

438

审稿时长

2.3 months

期刊介绍： Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.