A highly selective electron affinity facilitated H2S sensor: the marriage of tris(keto-hydrazone) and an organic field-effect transistor

被引：27

作者：

Yuvaraja, Saravanan ^{[1
]}

Bhyranalyar, Veerabhadraswamy Nagarajappa ^{[2
]}

Bhat, Sachin Ashok ^{[2
]}

Surya, Sandeep Goud ^{[1
]}

Yelamaggad, Channabasaveshwar Veerappa ^{[2
]}

Salama, Khaled Nabil ^{[1
]}

机构：

[1] King Abdullah Univ Sci & Technol KAUST, Adv Membranes & Porous Mat Ctr, Comp Elect & Math Sci & Engn Div, Sensors Lab, Thuwal 239556900, Saudi Arabia

[2] Ctr Nano & Soft Matter Sci CeNS, Jalahalli Bangalore 560013, Bengaluru, India

来源：

MATERIALS HORIZONS | 2021年 / 8卷 / 02期

关键词：

49;

D O I：

10.1039/d0mh01420f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Conjugated polymers (CPs) are emerging as part of a promising future for gas-sensing applications. However, some of their limitations, such as poor specificity, humidity sensitivity and poor ambient stability, remain persistent. Herein, a novel combination of a polymermonomer heterostructure, derived from a CP (PDVT-10) and a newly reported monomer [tris(keto-hydrazone)] has been integrated in an organic field-effect transistor (OFET) platform to sense H2S selectively. The hybrid heterostructure shows an unprecedented sensitivity (525% ppm(-1)) and high selectivity toward H2S gas. In addition, we demonstrated that the PDVT-10/tris(keto-hydrazone) OFET sensor has the lowest limit of detection (1 ppb), excellent ambient stability (similar to 5% current degradation after 150 days), good response-recovery behavior, and exceptional electrical behavior and gas response reproducibility. This work can help pave the way to incorporate futuristic gas sensors in a multitude of applications.

引用

页码：525 / 537

页数：13

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