High-Performance Flexible Thermoelectric Generator via Rapid Evaporation of Nanocrystalline Bi2Te3-Alloy Films

IF 5.5 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2025-08-31 DOI:10.1021/acsaem.5c02289

Varun Thottathil Sasi, , , Sochannao Machinao, , , Rasmi Thushara, , , Anoop Anchara Veettil, , , Devarajan Alagarasan, , , Vijayeta Pal, , , Malini Kalappattil Aravindan, , , Bhuvanesh Srinivasan, , , Ramesh Karuppannan, , and , Subash Chandra Bose Rapaka*,

{"title":"High-Performance Flexible Thermoelectric Generator via Rapid Evaporation of Nanocrystalline Bi2Te3-Alloy Films","authors":"Varun Thottathil Sasi, , , Sochannao Machinao, , , Rasmi Thushara, , , Anoop Anchara Veettil, , , Devarajan Alagarasan, , , Vijayeta Pal, , , Malini Kalappattil Aravindan, , , Bhuvanesh Srinivasan, , , Ramesh Karuppannan, , and , Subash Chandra Bose Rapaka*, ","doi":"10.1021/acsaem.5c02289","DOIUrl":null,"url":null,"abstract":"We demonstrate a high-performance flexible thermoelectric generator (FTEG) using nanocrystalline p-type Bi0.5Sb1.5Te3 and n-type Bi2Te2.7Se0.3 films deposited on polymer (PET) via rapid thermal evaporation (RTE) at room temperature. Without any annealing, these ∼1 μm films reach power factors of ∼1.5 and ∼1.2 mW·m–1·K–2 at 200 °C─among the highest for flexible Bi2Te3-based films. A 10-couple device yields ∼61 mV (446 nW) at ΔT = 25 °C and ∼13 mV at ∼10 °C on skin, demonstrating viable body-heat harvesting. RTE involves no high-temperature steps and is compatible with scalable, low-cost fabrication of wearable power sources.","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"8 18","pages":"13185–13190"},"PeriodicalIF":5.5000,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaem.5c02289","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

We demonstrate a high-performance flexible thermoelectric generator (FTEG) using nanocrystalline p-type Bi_0.5Sb_1.5Te₃ and n-type Bi₂Te_2.7Se_0.3 films deposited on polymer (PET) via rapid thermal evaporation (RTE) at room temperature. Without any annealing, these ∼1 μm films reach power factors of ∼1.5 and ∼1.2 mW·m^–1·K^–2 at 200 °C─among the highest for flexible Bi₂Te₃-based films. A 10-couple device yields ∼61 mV (446 nW) at ΔT = 25 °C and ∼13 mV at ∼10 °C on skin, demonstrating viable body-heat harvesting. RTE involves no high-temperature steps and is compatible with scalable, low-cost fabrication of wearable power sources.

Abstract Image

查看原文本刊更多论文

基于纳米晶bi2te3 -合金薄膜快速蒸发的高性能柔性热电发电机

我们展示了一种高性能柔性热电发生器（FTEG），该热电发生器使用纳米晶p型Bi0.5Sb1.5Te3和n型Bi2Te2.7Se0.3薄膜在室温下通过快速热蒸发（RTE）沉积在聚合物（PET）上。在没有任何退火的情况下，这些~ 1 μm薄膜在200°C时达到了~ 1.5和~ 1.2 mW·m-1·K-2的功率因数，是柔性bi2te3薄膜中最高的功率因数之一。一个10对器件在ΔT = 25°C时产生~ 61 mV (446 nW)，在~ 10°C时产生~ 13 mV，证明了可行的体温收集。RTE不涉及高温步骤，并且与可扩展的低成本可穿戴电源制造兼容。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.