On a Schottky diode-type hydrogen sensor with pyramid-like Pd nanostructures
作者： Po-Cheng Chou , Huey-Ing Chen , I-Ping Liu , Wei-Cheng Chen , Chun-Chia Chen
DOI: 10.1016/J.IJHYDENE.2015.05.036
关键词: Nanotechnology 、 Surface roughness 、 Hydrogen 、 Adsorption 、 Schottky diode 、 Fabrication 、 Transient response 、 Nanostructure 、 Hydrogen sensor 、 Materials science
摘要: Abstract A new Pd/AlGaN/GaN Schottky diode-type hydrogen sensor with pyramid-like Pd nanostructures is fabricated and studied comprehensively. The employed cause the substantial increase of surface roughness surface-to-volume aspect ratio which give remarkable adsorption sites on for molecules. Experimentally, device demonstrates enhanced sensing performance, including a large forward-bias current variation 1.95 × 10 −6 A high response 1454 under an introduced 1% H 2 /air gas at 300 K. These properties are remarkably superior to those conventional planar-surface device. In addition, improved detection limit 10 ppb H 300 K found nanostructures. related characteristics transient responses steady-state analysis also in this work. Therefore, based advantages low-cost, easy fabrication, solid stability operation, shows promise high-performance applications.
sci-hub.se 参考文章(25)
Ingemar Lundström, None, Hydrogen sensitive mos-structures: Part 1: Principles and applications Sensors and Actuators. ,vol. 1, pp. 403- 426 ,(1981) , 10.1016/0250-6874(81)80018-2
Robert C. Ph.D. Weast, Handbook of Chemistry and Physics ,(1970)
Kwang Hyeon Baik, Hyonwoong Kim, Sung-Nam Lee, Eunju Lim, S. J. Pearton, F. Ren, Soohwan Jang, Hydrogen sensing characteristics of semipolar (112¯2) GaN Schottky diodes Applied Physics Letters. ,vol. 104, pp. 072103- ,(2014) , 10.1063/1.4866010
Junghui Song, Wu Lu, Jeffrey S. Flynn, George R. Brandes, AlGaN/GaN Schottky diode hydrogen sensor performance at high temperatures with different catalytic metals Solid-state Electronics. ,vol. 49, pp. 1330- 1334 ,(2005) , 10.1016/J.SSE.2005.05.013
Hyonwoong Kim, Wantae Lim, Jae-Hoon Lee, S.J. Pearton, F. Ren, Soohwan Jang, Highly sensitive AlGaN/GaN diode-based hydrogen sensors using platinum nanonetworks Sensors and Actuators B-chemical. ,vol. 164, pp. 64- 68 ,(2012) , 10.1016/J.SNB.2012.01.067
Ching-Wen Hung, Tsung-Han Tsai, Huey-Ing Chen, Yan-Ying Tsai, Tzu-Pin Chen, Li-Yang Chen, Kuei-Yi Chu, Wen-Chau Liu, Temperature-dependent hydrogen sensing characteristics of a new Pt/InAlAs Schottky diode-type sensor Sensors and Actuators B-chemical. ,vol. 128, pp. 574- 580 ,(2008) , 10.1016/J.SNB.2007.07.034
Jean-Francois Lamarque, Detlef P. van Vuuren, Tom Kram, Hans Eerens, Bas van Ruijven, Emission scenarios for a global hydrogen economy and the consequences for global air pollution Global Environmental Change-human and Policy Dimensions. ,vol. 21, pp. 983- 994 ,(2011) , 10.1016/J.GLOENVCHA.2011.03.013
Constantinos Christofides, Andreas Mandelis, Solid‐state sensors for trace hydrogen gas detection Journal of Applied Physics. ,vol. 68, ,(1990) , 10.1063/1.346398
Jihyun Kim, B.P. Gila, C.R. Abernathy, G.Y. Chung, F. Ren, S.J. Pearton, Comparison of Pt/GaN and Pt/4H-SiC gas sensors Solid-state Electronics. ,vol. 47, pp. 1487- 1490 ,(2003) , 10.1016/S0038-1101(02)00495-1
Tsung-Han Tsai, Huey-Ing Chen, Kun-Wei Lin, Ching-Wen Hung, Chia-Hao Hsu, Tzu-Pin Chen, Li-Yang Chen, Kuei-Yi Chu, Chung-Fu Chang, Wen-Chau Liu, Hydrogen sensing characteristics of a Pd/AlGaN/GaN schottky diode Applied Physics Express. ,vol. 1, pp. 041102- ,(2008) , 10.1143/APEX.1.041102