Fabrication of SnS2/Si heterostructure for ultra-high selective and rapid room temperature NO2 gas detection with enhanced carrier mobility

IF 8 1区化学 Q1 CHEMISTRY, ANALYTICAL

Sensors and Actuators B: Chemical Pub Date : 2024-12-25 DOI:10.1016/j.snb.2024.137165

R. Abimaheshwari , T. Murugadass , R. Abinaya , M. Navaneethan , S. Harish

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Abstract

The formation of heterostructure offers significant potential to improve sensor performance due to its unique interfacial properties. In this work, we report the fabrication of highly efficient

{SnS}_{2} / Si

heterostructure based gas sensor for room temperature detection (30 °C) of

{NO}_{2}

. The

{SnS}_{2} / Si

sensor exhibits an outstanding sensing response of 671 % towards 40 ppm of

{NO}_{2}

, which is 4.5 times higher than that of

{SnS}_{2}

. Moreover, it shows fast response and recovery time of 26 s and 51.5 s, respectively. It shows a distinct selectivity towards

{NO}_{2}

with excellent reproducibility and a low detection limit of 171 ppb, maintaining 93.8 % of stability over 30 days. The enhanced sensing performance is attributed to the accelerated charge transfer rate and carrier mobility resulting from the formation of

{SnS}_{2} / Si

heterostructure, which reduces the charge transport time and accelerates desorption, resulting in rapid recovery. Thus, this approach presents a promising strategy to achieve superior sensing characteristics and advancements in gas sensor technologies.

Abstract Image

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SnS2/Si异质结构用于室温NO2气体的超高选择性和快速检测

异质结构的形成由于其独特的界面特性，为提高传感器性能提供了巨大的潜力。在这项工作中，我们报道了用于室温（30°C） NO2NO2检测的高效SnS2/SiSnS2/Si异质结构气体传感器的制造。SnS2/SiSnS2/Si传感器对NO2NO2浓度为40 ppm时的传感响应为671%，是SnS2SnS2的4.5倍。其响应时间和恢复时间分别为26 s和51.5 s。该方法对NO2NO2具有明显的选择性，重现性好，检测限低，为171 ppb， 30天内稳定性为93.8%。传感性能的增强是由于SnS2/SiSnS2/Si异质结构的形成加速了电荷转移速率和载流子迁移率，减少了电荷传输时间，加速了解吸，导致快速恢复。因此，这种方法提出了一种有前途的策略，以实现优越的传感特性和气体传感器技术的进步。

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来源期刊

Sensors and Actuators B: Chemical 工程技术-电化学

CiteScore

14.60

自引率

11.90%

发文量

1776

审稿时长

3.2 months

期刊介绍： Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.