Xiaoyu Sun, Shuaihang Hou, Zuoxu Wu, Jian Wang, Zunqian Tang, Xingjun Liu, Jun Mao, Qian Zhang and Feng Cao
{"title":"改进约束GeTe薄膜的热电和传感性能","authors":"Xiaoyu Sun, Shuaihang Hou, Zuoxu Wu, Jian Wang, Zunqian Tang, Xingjun Liu, Jun Mao, Qian Zhang and Feng Cao","doi":"10.1039/D5NR01596K","DOIUrl":null,"url":null,"abstract":"<p >Thermoelectric thin films hold significant potential for self-powered microelectronic and advanced sensing devices. However, they normally demonstrate inferior electrical transport performance compared to their bulk counterparts. Herein, we deposited growth-restricted GeTe thin films to improve their electrical transport performance and further employed optical thin films, serving as spectrally selective absorbers and radiative cooling coatings, to enlarge the temperature difference across the thermoelectric legs. Growth-restricted GeTe thin films with high crystallinity were achieved under the confinement effect of the top SiO<small><sub>2</sub></small> layer. Due to the increase in carrier mobility, the room-temperature power factor of the GeTe film is significantly improved to 26.1 μW cm<small><sup>−1</sup></small> K<small><sup>−2</sup></small>. In combination with a W-SiO<small><sub>2</sub></small>-based spectrally selective absorber and PDMS/Ag radiative coating, a thin-film thermoelectric device assembled using the optimized GeTe and Ag<small><sub>2</sub></small>Se thin films can achieve a temperature difference of 22 K under the AM1.5 spectrum and produce a maximum output power of 0.57 μW. Furthermore, it can sense outdoor weather conditions through the detection of light intensity. These findings demonstrate the potential of the GeTe thin film in both power generation and sensing.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" 26","pages":" 15785-15793"},"PeriodicalIF":5.1000,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Advancing thermoelectric and sensing performance in constrained GeTe thin films†\",\"authors\":\"Xiaoyu Sun, Shuaihang Hou, Zuoxu Wu, Jian Wang, Zunqian Tang, Xingjun Liu, Jun Mao, Qian Zhang and Feng Cao\",\"doi\":\"10.1039/D5NR01596K\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Thermoelectric thin films hold significant potential for self-powered microelectronic and advanced sensing devices. However, they normally demonstrate inferior electrical transport performance compared to their bulk counterparts. Herein, we deposited growth-restricted GeTe thin films to improve their electrical transport performance and further employed optical thin films, serving as spectrally selective absorbers and radiative cooling coatings, to enlarge the temperature difference across the thermoelectric legs. Growth-restricted GeTe thin films with high crystallinity were achieved under the confinement effect of the top SiO<small><sub>2</sub></small> layer. Due to the increase in carrier mobility, the room-temperature power factor of the GeTe film is significantly improved to 26.1 μW cm<small><sup>−1</sup></small> K<small><sup>−2</sup></small>. In combination with a W-SiO<small><sub>2</sub></small>-based spectrally selective absorber and PDMS/Ag radiative coating, a thin-film thermoelectric device assembled using the optimized GeTe and Ag<small><sub>2</sub></small>Se thin films can achieve a temperature difference of 22 K under the AM1.5 spectrum and produce a maximum output power of 0.57 μW. Furthermore, it can sense outdoor weather conditions through the detection of light intensity. These findings demonstrate the potential of the GeTe thin film in both power generation and sensing.</p>\",\"PeriodicalId\":92,\"journal\":{\"name\":\"Nanoscale\",\"volume\":\" 26\",\"pages\":\" 15785-15793\"},\"PeriodicalIF\":5.1000,\"publicationDate\":\"2025-06-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nanoscale\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/nr/d5nr01596k\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanoscale","FirstCategoryId":"88","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/nr/d5nr01596k","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Advancing thermoelectric and sensing performance in constrained GeTe thin films†
Thermoelectric thin films hold significant potential for self-powered microelectronic and advanced sensing devices. However, they normally demonstrate inferior electrical transport performance compared to their bulk counterparts. Herein, we deposited growth-restricted GeTe thin films to improve their electrical transport performance and further employed optical thin films, serving as spectrally selective absorbers and radiative cooling coatings, to enlarge the temperature difference across the thermoelectric legs. Growth-restricted GeTe thin films with high crystallinity were achieved under the confinement effect of the top SiO2 layer. Due to the increase in carrier mobility, the room-temperature power factor of the GeTe film is significantly improved to 26.1 μW cm−1 K−2. In combination with a W-SiO2-based spectrally selective absorber and PDMS/Ag radiative coating, a thin-film thermoelectric device assembled using the optimized GeTe and Ag2Se thin films can achieve a temperature difference of 22 K under the AM1.5 spectrum and produce a maximum output power of 0.57 μW. Furthermore, it can sense outdoor weather conditions through the detection of light intensity. These findings demonstrate the potential of the GeTe thin film in both power generation and sensing.
期刊介绍:
Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.