Issue

Vol. 16 (2024)

Real-Time Tunable Gas Sensing Platform Based on SnO2 Nanoparticles Activated by Blue Micro-Light-Emitting Diodes

https://doi.org/10.1007/s40820-024-01486-2
Gi Baek Nam
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Jung‑El Ryu
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Tae Hoon Eom
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Seung Ju Kim
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Jun Min Suh
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Seungmin Lee
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Sungkyun Choi
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Cheon Woo Moon
Department of Display Materials Engineering, Soonchunhyang University, Asan 31538, Republic of Korea
Seon Ju Park
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Soo Min Lee
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Byungsoo Kim
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Sung Hyuk Park
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Jin Wook Yang
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Sangjin Min
Department of Photonics and Nanoelectronics, BK21 FOUR ERICA‑ACE Center, Hanyang University ERICA, Ansan 15588, Republic of Korea
Sohyeon Park
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Sung Hwan Cho
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Hyuk Jin Kim
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Sang Eon Jun
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Tae Hyung Lee
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Yeong Jae Kim
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Jae Young Kim
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
Young Joon Hong
Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
Jong‑In Shim
Department of Photonics and Nanoelectronics, BK21 FOUR ERICA‑ACE Center, Hanyang University ERICA, Ansan 15588, Republic of Korea
Hyung‑Gi Byun
Department of Electronics, Information and Communication Engineering, Kangwon National University, Samcheok 25913, Republic of Korea
Yongjo Park
Advance Institute of Convergence Technology, Seoul National University, Suwon 16229, Republic of Korea
Inkyu Park
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
Sang‑Wan Ryu
Department of Physics, Chonnam National University, Gwangju 500‑757, Republic of Korea
Ho Won Jang
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea

Corresponding Author: Ho Won Jang

hwjang@snu.ac.kr

Nano-Micro Letters, Vol. 16 (2024), Article Number: 261

Abstract

Micro-light-emitting diodes (μLEDs) have gained significant interest as an activation source for gas sensors owing to their advantages, including room temperature operation and low power consumption. However, despite these benefits, challenges still exist such as a limited range of detectable gases and slow response. In this study, we present a blue μLED-integrated light-activated gas sensor array based on SnO2 nanoparticles (NPs) that exhibit excellent sensitivity, tunable selectivity, and rapid detection with micro-watt level power consumption. The optimal power for μLED is observed at the highest gas response, supported by finite-difference time-domain simulation. Additionally, we first report the visible light-activated selective detection of reducing gases using noble metal-decorated SnO2 NPs. The noble metals induce catalytic interaction with reducing gases, clearly distinguishing NH3, H2, and C2H5OH. Real-time gas monitoring based on a fully hardware-implemented light-activated sensing array was demonstrated, opening up new avenues for advancements in light-activated electronic nose technologies.


Highlights:
1 Blue micro-light-emitting diodes (μLED)-integrated gas sensors were fabricated as monolithic structure by directly loading sensing materials onto the μLED.
2 SnO2 nanoparticles are activated by blue μLED and exhibit outstanding sensitivity to NO2 at μ-Watt power levels.
3 Noble metal (Au, Pd, Pt)-decorated SnO2 showed the tunable gas selectivity for 4 target gases under blue light illumination.

Keywords

Micro-LED Gas sensor array Low power consumption Metal decoration Real-time detection
Nam, Gi Baek, Jung‑El Ryu, Tae Hoon Eom, Seung Ju Kim, Jun Min Suh, Seungmin Lee, Sungkyun Choi, Cheon Woo Moon, Seon Ju Park, Soo Min Lee, Byungsoo Kim, Sung Hyuk Park, Jin Wook Yang, Sangjin Min, Sohyeon Park, Sung Hwan Cho, Hyuk Jin Kim, Sang Eon Jun, Tae Hyung Lee, Yeong Jae Kim, Jae Young Kim, Young Joon Hong, Jong‑In Shim, Hyung‑Gi Byun, Yongjo Park, Inkyu Park, Sang‑Wan Ryu, and Ho Won Jang. 2024. “Real-Time Tunable Gas Sensing Platform Based on SnO2 Nanoparticles Activated by Blue Micro-Light-Emitting Diodes”. Nano-Micro Letters 16 (August):261. https://doi.org/10.1007/s40820-024-01486-2.
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