Photo-conductivity and Hall mobility of holes at polypyrrole–diamond interface

• Published in: Diamond and related materials Vol. 19; no. 2; pp. 174 - 177
• Main Authors: Čermák, J., Rezek, B., Hubík, P., Mareš, J.J., Kromka, A., Fejfar, A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2010; Elsevier
• Subjects: Charge carrier mobility; Charge transfer; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Contact; Corners; Cross-disciplinary physics: materials science; rheology; Deposition; Diamond; Electrical resistivity; Electrically conductive; Electrodeposition, electroplating; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic transport phenomena in thin films and low-dimensional structures; Exact sciences and technology; Fullerenes and related materials; diamonds, graphite; Galvanomagnetic and other magnetotransport effects (including thermomagnetic effects); Hall effect; Halls; Illumination; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Photoconduction and photovoltaic effects; photodielectric effects; Physics; Polypyrrole; Polypyrroles; Specific materials; Diamond; Hall effect; Charge transfer; Polypyrrole; Charge carrier mobility; Electrical conductivity; Transport properties; Electrical properties; Hall mobility; Diamonds; Hole mobility; Thin films; Interfaces; Electrodeposition; Illumination; Polypyrroles; Carrier mobility; Photoconductivity
• ISSN: 0925-9635; 1879-0062
• DOI: 10.1016/j.diamond.2009.09.004

Surface of intrinsic monocrystalline diamoncd is selectively terminated by hydrogen and oxygen atoms to create electrically conductive microscopic square with contact leads in corners. Polypyrrole (PPy) film is then electrochemically deposited onto the H-terminated square. The resulting PPy-diamond system is characterized under a broad-band light illumination by four probe resistivity and Hall mobility measurements and the in-plane transport properties of holes at the PPy-diamond interface are evaluated. We also discuss applicability of these techniques on this specific heterosystem.