Highly oriented growth of n-type ZnO films on p-type single crystalline diamond films and fabrication of high-quality transparent ZnO/diamond heterojunction Original Research Article

We present the results on the fabrication and characterization of high-quality transparent heterojunction between n-type ZnO film and p-type diamond single crystalline film on the substrate of diamond bulk single crystal. The results indicated that the current density of the fabricated p–n junction reaches 110 A/m2 when the forward bias voltage is 2.5 V, and the turn-on voltage value is about 0.75 V and agreement with the expected value. Moreover, a good rectification characteristic and transparent in the visible light range was obtained in the device.