期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 13, 期 32, 页码 14663-14667出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cp21104h
关键词
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资金
- National Natural Science Foundation of China [60806028, 20901021, 50903059, 91027021]
- Chinese Ministry of Education [NCET-08-0764]
- Fundamental Research Funds for the Central Universities
Gallium-doped n-type CdS nanowires (NWs) were successfully synthesized via a thermal evaporation method. The conductivities of the CdS NWs were dramatically improved by nearly nine orders of magnitude after Ga doping, and could be further tuned over a wide range by adjusting the doping level. High-performance metal-insulator-semiconductor field-effect transistors (MISFETs) were constructed based on the single CdS : Ga NW with high-kappa Si(3)N(4) dielectrics and top-gate geometries. In contrast to back-gate FETs, the MISFETs revealed a substantial improvement in device performance. Nano-light emitting diodes (nanoLEDs) were fabricated from the CdS : Ga NWs by using a n-NW/p(+)-Si substrate hybrid device structure. The nanoLEDs showed a bright yellow emission at a low forward bias. It is expected that the Ga-doped CdS NWs with controlled electrical transport properties will have important applications in nano-optoelectronic devices.
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