Open AccessEnhanced electrical and optoelectrical properties of cadmium selenide nanobelts by chlorine doping
Author(s) -
Zhang Lijie,
Yu Hongfei,
Cao Wei,
Zou Chao,
Dong Youqing,
Zhu DaMing,
Huang Shaoming
Publication year - 2014
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2013.0611
Subject(s) - cadmium selenide , doping , selenide , materials science , chlorine , cadmium , nanotechnology , chemical engineering , inorganic chemistry , optoelectronics , chemistry , selenium , metallurgy , quantum dot , engineering
Single‐crystalline chlorine‐doped cadmium selenide (CdSe) nanobelts (NBs) with a wurtzite structure were synthesised by using CdSe and InCl 3 powder as sources via a co‐evaporation approach. The investigation of the performance of the field‐effect transistors fabricated from Cl‐doped NBs shows n ‐type conduction behaviour and enhanced conductivity (1–70 S/cm). Furthermore, it is found that the photoconductivity (illuminated by a white light with a power density of 1.3 mW/cm 2 ) increases with the enhancement of the conductivity. Photoconductive analysis reveals that the Cl‐doped NBs show excellent photoresponse properties, with responsivity of 8.87 × 10 5 AW −1 and a corresponding external quantum efficiency of 1.74 × 10 6 when illuminated under a 650 nm light and biased 1 V. In addition, the electrical properties of the Cl‐doped NBs can be influenced by changing the ambiance, which is caused by their surface states.