GAO Li-li, LI Song-fei, CAO Tian-fu etc. Stability of P-type conductivity in nitrogen-doped MgZnO thin film[J]. , 2015,30(6): 925-929 DOI: 10.3788/YJYXS20153006.0925.
Stability of P-type conductivity in nitrogen-doped MgZnO thin film
.The stability of p-type conductivity in this film preserved in room temperature air ambient was studied.It is found that the resistivity increased and the carrier concentration decreased with time.The film transformed from p-type to n-type semiconductor with resistivity of 85.58cm
Hall mobility of 1.61 cm
2
V
-1
s
-1
and carrier concentration of 4.5310
16
/cm
3
after preservation for five months.The film transformed to p-type semiconductor again after thermal annealing under 10
-4
Pa.It can be deduced that
the p-type film reverts to n-type conductivity because hydrogen and water were adsorbed by film to create shallow donors in air ambient.
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references
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