Flexible hydrogen sensors using graphene with palladium nanoparticle decoration

详细信息	查看全文 | 推荐本文 |

• 作者：Min Gyun Chung^a  ; [Author Vitae] ; Dai-Hong Kim^b  ; [Author Vitae] ; Dong Kyun Seo^a  ; [Author Vitae] ; Taewoo Kim^a  ; [Author Vitae] ; Hyeong Uk Im^a  ; [Author Vitae] ; Hyun Myoung Lee^c  ; [Author Vitae] ; Ji-Beom Yoo^c  ; [Author Vitae] ; Seong-Hyeon Hong^b  ; [Author Vitae] ; Tae June Kang^a ; ^{taejunekang@snu.ac.kr}  ; [Author Vitae] ; Yong Hyup Kim^a ; ^{yongkim@snu.ac.kr}  ; [Author Vitae]
• 关键词：Graphene ; Palladium nanoparticle ; Hydrogen ; Gas sensor
• 刊名：Sensors and Actuators B ; Chemical
• 出版年：2012
• 期刊代码：161_09254005
• 类别：et
• 出版时间：5 July, 2012
• 卷：169
• 期：Complete
• 页码：387-392
• 文件大小：895 K

摘要

Flexible hydrogen gas (H₂) sensors are fabricated using a single layer graphene decorated with palladium (Pd) nanoparticles. Thermally evaporated Pd is generally deposited on a graphene in the form of nanoparticles when the deposition thickness is very small. The graphene sensor with Pd thickness of 3 nm exhibits a gas response of 鈭?3%when exposed to 1000 ppm H₂ and it is able to detect as low as 20 ppm H₂ at room temperature (22 掳C). The sensor is so flexible that any significant degradation is not observed when it is bent to a curved geometry with a bending radius of 3 mm. The flexible hydrogen sensors are applicable to a broad range of systems with demanding mechanical flexibility, durability and high gas response.