Low- and high-frequencyC-V characteristics of the contacts formed by sublimation of the nonpolymeric organic compound on p-type Si substrate

Abstract

The Sn/pyronine‐B/p‐Si Schottky structures have been obtained by sublimation of the organic compound pyronine‐B onto the top of a p‐Si surface. Barrier height and ideality factor value of 0.79 eV and 1.13, respectively, for the device have been determined from the forward‐bias current–voltage (I–V) characteristics. The interface state density obtained from the forward bias high and low capacitance–voltage characteristics increases exponentially with bias between the midgap and the top of the valance band, from 2.15 × 1010 cm–2 eV–1 at (0.79–Ev) eV to 1.16 × 1012 cm–2 eV–1 at (0.53–Ev) eV. These values have been compared to those of the metal/Si structures in the literature, and it is seen that the presence of the nonreactive organic materials at the inorganic semiconductor and metal interface may obstruct the generation of the interface states at the semiconductor surface that strongly influence the Schottky barrier formation. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Electrical characteristics of Au/Pyronine-B/moderately doped n-type InP Schottky structures in a wide temperature range

“…Lately, the use of thin organic interlayers in metal/inorganic semiconductor junctions is a promising direction for applications in high-frequency microwave technology [8,9]. Furthermore, many studies have been recently made for the barrier height (BH) enhancement or modification using the thin organic interfacial layers [10][11][12][13][14][15][16][17][18]. The resulting junction, which involves a hybrid structure between the p and n junction and the Schottky diode has been called pseudo-Schottky diode [19].…”

The double Gaussian distribution of inhomogeneous barrier heights in the organic‐on‐inorganic Schottky devices

“…Nowadays, organic thin films and organic‐based hybrid structures have gradually rising application areas in various electronic devices, such as diodes 1–3, dye sensitized solar cells (DSSCs) 4, organic light emitting diodes (OLEDs) 5, 6, RFID tags 7 and xerography 8. Therefore, it would be quite important a better understanding of the metal–organic interface in the further development and improvement of organic and molecular electronics.…”

Effects of γ-irradiation and heat treatment on structural, spectral and optical parameters of pyronine G(Y) thin films

“…One is where the oxygen assumes positive charge and in the other possible structure the nitrogen assumes positive charge (see Fig. 1(a)) [6][7][8][9][10][11][12][13][14][15]. However, because the nitrogen is less electronegative than oxygen, the former can support a positive charge more easily than the latter, and therefore the structure with positive nitrogen is more likely one.…”