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Pt/CdTe/Pt asymmetric nano-Schottky diodes from colloidal quantum dots
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We have fabricated nano-Schottky diodes of CdTeQDs with platinum metal electrodes in metal-semiconductor-metal planar configuration by drop-casting. The observed high value of ideality factor (13.3) of the diode was possibly due to the presence of defects in colloidalQDs. We observed asymmetry and non-linear nature of I-V characteristics between forward and reverse directions, which has been explained in terms of size distributions of quantum dots due to coffee ring effect.
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