A cubic boron nitride P-N diode: Fabrication in a large-volume press

Abstract A simple method to determine the temperature of synthesis was proposed. (Mishima et al., to be published) This method utilized the melting of NaCl as an indicator of heater temperature. Applying the method to the fabrication of cBN p-n diodes in a large volume belt-type apparatus, we obtained an UV LED of ∼2 mm in size.