Abstract:
:We report evidence of the transition from n- to p-type conduction of InN with increasing Mg dopant concentration by using photoconductivity (PC) measurement at room temperature. This transition is depicted as a conversion from negative to positive PC under above-bandgap optical excitation. The n- to p-type transition in InN:Mg is further confirmed by thermopower measurements. PC detection method is a bulk effect since the optical absorption of the surface electron accumulation is negligibly low due to its rather small thickness, and thus shows advantage to detect p-type conduction. This technique is certainly helpful to study p-type doping of InN, which is still a subject of discussions.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Guo L,Wang XQ,Zheng XT,Yang XL,Xu FJ,Tang N,Lu LW,Ge WK,Shen B,Dmowski LH,Suski Tdoi
10.1038/srep04371subject
Has Abstractpub_date
2014-03-13 00:00:00pages
4371issn
2045-2322pii
srep04371journal_volume
4pub_type
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