期刊
NANOTECHNOLOGY
卷 21, 期 45, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/21/45/455202
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资金
- Sectoral Operational Program Human Resource Development (SOPHRD) [POSDRU/89/1.5/S/63700]
We report photodetection in a very large spectral bandwidth, which encompasses ultraviolet, visible and near infrared, using graphene inks or graphene inks functionalized with either gold or silver nanoparticles, or gold nanoparticles further encapsulated with bovine serum albumin deposited on interdigitated electrodes fabricated on a silicon dioxide/silicon substrate. In contrast to gold-functionalized graphene inks, which have responsivities better than 1 mA W-1 at a 0.1 V bias over the huge bandwidth extending from 215 to 2500 nm, Ag-functionalized inks show at least a four-fold increased responsivity, with a record value of 13.7 mA W-1 in near infrared.
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