改进约束GeTe薄膜的热电和传感性能

IF 5.1 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Nanoscale Pub Date : 2025-06-13 DOI:10.1039/D5NR01596K
Xiaoyu Sun, Shuaihang Hou, Zuoxu Wu, Jian Wang, Zunqian Tang, Xingjun Liu, Jun Mao, Qian Zhang and Feng Cao
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引用次数: 0

摘要

热电薄膜在自供电微电子和先进传感器件方面具有重要的潜力。然而,与散装材料相比,它们通常表现出较差的电传输性能。在此,我们沉积了生长受限的GeTe薄膜以提高其电输运性能,并进一步使用光学薄膜作为光谱选择性吸收剂和辐射冷却涂层,以扩大热电腿上的温差。在顶部SiO2层的约束作用下,获得了高结晶度的生长受限型碲薄膜。由于载流子迁移率的提高,GeTe薄膜的室温功率因数显著提高到26.1 μW cm−1 K−2。结合基于w - sio2的光谱选择性吸收剂和PDMS/Ag辐射涂层,利用优化后的GeTe和Ag2Se薄膜组装的薄膜热电器件在AM1.5光谱下的温差为22 K,最大输出功率为0.57 μW。此外,它还可以通过检测光强来感知室外天气状况。这些发现证明了GeTe薄膜在发电和传感方面的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Advancing thermoelectric and sensing performance in constrained GeTe thin films†

Advancing thermoelectric and sensing performance in constrained GeTe thin films†

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.

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来源期刊
Nanoscale
Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
12.10
自引率
3.00%
发文量
1628
审稿时长
1.6 months
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.
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