Modulated gas sensor based on vertical organic diode with blended channel for ppb-regime detection

被引：26

作者：

Chuang, Ming-Yen ^{[1
,2
]}

Chen, Jian-Nan ^{[3
]}

Zan, Hsiao-Wen ^{[1
,2
]}

Lu, Chia-Jung ^{[4
]}

Meng, Hsin-Fei ^{[5
]}

机构：

[1] Natl Chiao Tung Univ, Dept Photon, 1001 Ta Hsueh Rd, Hsinchu 300, Taiwan

[2] Natl Chiao Tung Univ, Inst Electroopt Engn, 1001 Ta Hsueh Rd, Hsinchu 300, Taiwan

[3] Natl Chiao Tung Univ, Inst Elect Engn, 101 Kuang Fu Rd,Sect 2, Hsinchu 300, Taiwan

[4] Natl Taiwan Normal Univ, Dept Chem, 162 Heping East Rd,Sect 1, Taipei 106, Taiwan

[5] Natl Chiao Tung Univ, Inst Phys, 1001 Ta Hsueh Rd, Hsinchu 300, Taiwan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2016年 / 230卷

关键词：

Gas sensor; PCBM; P3HT; Vertical; Blended; Ammonia; SENSING PROPERTIES; CATHODE; P3HT/PCBM; ARRAYS; LAYER;

D O I：

10.1016/j.snb.2016.02.030

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We demonstrate an extremely sensitive ammonia gas sensor based on vertical organic diode to exhibit a 1 ppb detection limit. Using phenyl-C61-butyric acid methyl ester (PCBM) as the sensing layer, the nano porous structure enlarges the surface to volume ratio and hence realizes the ppb-regime sensitivity. The proposed vertical nano-junction (VNJ) organic diode is then investigated by changing the semiconducting materials (i.e. sensing material). In addition to a pure n-type or p-type sensing material, the blend of n/p organic semiconductor (PCBM/P3HT) is used to react with gas. Changing the n/p blending ratio from 0 to 100% delivers a tunable gas response to ammonia and nitric oxide, hence demonstrating a sensing map concept with good selectivity. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：223 / 230

页数：8

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