Photoconductance of aligned SnO2 nanowire field effect transistors

Abstract

We report on the optoelectronic properties of the aligned SnO2 nanowire (NW) field effect transistors (FETs) fabricated via a sliding transfer of NWs grown by chemical vapor deposition. Photocurrent measurements with polarized UV light confirmed a well aligned NWs along the channels. UV photosensitivity of ∼107 at the gate voltage Vg=−40 V was obtained due to a small dark-current at the turn-off state of FET. The dynamic response of the photocurrent became faster for the higher mobility SnO2 NW FETs. We expect our aligned SnO2 NW FETs will be useful as polarized UV detectors with a high sensitivity.

Fabrication of flexible micro-supercapacitor array with patterned graphene foam/MWNT-COOH/MnO electrodes and its application

“…6(c). The value of the exponent (0.9 instead of 1.0) is attributed to the current loss arising from the recombination of e-h pairs [53][54].…”

“…The UV pulse sequence is given at the bottom of Fig. 6(d), corresponding to an irradiation time of 25 s followed by an interval of 35 s. The photosensitivity can be calculated according to the following equation [53]:…”

Electronic structure tuning via surface modification in semimetallic nanowires

“…Tuning of a broad range of properties has been successfully demonstrated and the design of novel nanostructures exploiting chemical and structural modifications have allowed elucidation of numerous applications such as chemical sensors [1,2] transparent electronics [3], and tunnel field-effect transistors (TFETs) [4,5], making exploitation of size effects a way of enhancing a material's versatility by allowing some degree of tunability of its properties through geometric effects.…”

Facile Synthesis of Porous SnO2 Spherical-Like Aggregates and Their Gas Sensing Property

“…SnO 2 , as an n-type semiconductor with novel electrical and chemical property, has wide application in the fields of field effect transistors [1], catalysis [2], lithium-ion battery [3], gas sensing devices and solar cells [4,5]. Especially, SnO 2 has bright prospect to be used as one kind of sensing materials due to its good physical and chemical stability, reversibility, and short adsorption time [6].…”