✦ LIBER ✦

Induction of p-type conduction in sputtered deposited Al-N codoped ZnO thin films

✍ Scribed by Amit Kumar; Manoj Kumar; Beer Pal Singh

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 494 KB
Volume: 283
Category: Article
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2010.05.077

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✦ Synopsis

Al and N codoped ZnO thin films were grown on n-Si (100) substrate by sputtering technique. Hall effect measurements of as-grown films exhibited n-type conduction, however 500 °C Ar annealed codoped films showed p-type conductivity with a hole concentration of 9.9 × 10 16 cm -3 , resistivity of 15.95 Ω-cm and hole mobility of 3.95 cm 2 /Vs, respectively. Codoped ZnO thin films were found to be highly c-axis oriented with good crystal quality. A neutral acceptor-bound exciton and donor-acceptor-pair emissions that appeared at room temperature photoluminescence measurement verify p-type conduction in Al and N codoped ZnO film. The current-voltage characteristics of p-n heterojunction evidently showed a diode like rectifying behaviour.

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