Journal
THIN SOLID FILMS
Volume 520, Issue 6, Pages 1944-1948Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2011.09.043
Keywords
Devices; Schottky barriers; Organics; Surfaces and interfaces
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In this work, we present that Rhodamine-101 (Rh-101) organic molecules can control the electrical characteristics of conventional Au/n-InP metal-semiconductor contacts. An Au/n-InP Schottky junction with Rh-101 interlayer has been formed by using a simple cast process. A potential barrier height as high as 0.88 eV has been achieved for Au/Rh-101/n-InP Schottky diodes, which have good current-voltage (I-V) characteristics. This good performance is attributed to the effect of formation of interfacial organic thin layer between Au and n-InP. By using capacitance-voltage measurement of the Au/Rh-101/n-InP Schottky diode the diffusion potential and the barrier height have been calculated as 0.78 V and 0.88 eV, respectively. From the I-V measurement of the diode under illumination, short circuit current and open circuit voltage have been extracted as 1.70 mu A and 240 mV, respectively. (C) 2011 Elsevier B.V. All rights reserved.
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