Vanadyl phthalocyanine (VOPc) films were produced on glass substrates by the MBE technique.Films produced at a substrate temperature of room temperature have a phase I .The phase with absorption peaks at 680 nm and 740 m at an UV-visible spectroscopy is called phase I , The red-shifted phase introduced by heating at 100 OC for one hour is called phase 11 .We investigated the phase transition process from phase I to phase II with the TSC method. The TSC of VOPdglass measured under a poling temperature : 100 O C and poling voltage : 600 V have three peaks. Two peaks are related to a glass substrates. The remaining one peak near
We report on an ultraviolet photoconductive detector based on cerium fluoride (CeF3) thin films. CeF3 thin films were grown on quartz glass substrates by the pulsed laser deposition (PLD) method. Optimization of the substrate temperature using the PLD method successfully increased the photocurrent of the CeF3 detector. The photocurrent increases linearly up to at least 600 V. The sample grown at 670 K shows the highest crystallinity and orientation. This sample shows a response in the wavelength range below 310 nm without any filters. Additionally, the measured dielectric-breakdown field of this detector exceeded 15 kV/cm.
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