A Brief Review on theIn SituSynthesis of Boron-Doped Diamond Thin Films

Abstract

Diamond thin films are well known for their unsurpassed physical and chemical properties. In the recent past, research interests in the synthesis of conductive diamond thin films, especially the boron-doped diamond (BDD) thin films, have risen up to cater to the requirements of electronic, biosensoric, and electrochemical applications. BDD thin films are obtained by substituting some of the sp 3 hybridized carbon atoms in the diamond lattice with boron atoms. Depending on diamond thin film synthesis conditions, boron doping routes, and further processing steps (if any), different types of BDD diamond thin films with application-specific properties can be obtained. This paper will review several important advances in the synthesis of boron-doped diamond thin films, especially those synthesized via gas phase manipulation.

CASSCF and MRMP2 investigation of the interaction of arsenic adatoms with carbon dimers on the diamond (100)-2 × 1 surface

“…In order to get such materials, additional chemical species are introduced during the synthesis process. For a p-type semiconductor, for example, a common practice consists of adding trimethylboron, diborane, triethylboron to the usual reactants (H 2 and CH 4 ), and, at the end, boron atoms are incorporated into the crystal structure [13]. Obtaining a p-type material is now well established.…”

Environmental Applications of Boron‐Doped Diamond Electrodes: 1. Applications in Water and Wastewater Treatment

“…The mechanism of diamond growth in CVD method is explained very neatly in various articles. [2,13,14] Growth rate of diamond in CVD technique is in the range of 0.1 to 2 μm h À 1 . [13] The favorable conditions for diamond growth in CVD method are: substrate temperature of 700-1000°C, methane concentration of 0.3-1 % in hydrogen, gas pressure of 10-150 torr, filament temperatures up to~2800°C, microwave powers of 1000-1300 W, and reaction time of 3 h. [1,13] Thickness of diamond film formed by CVD method is between 1-10 mm.…”

“…The continuous production of H 2 O 2 in electro-Fenton process promotes reaction (14) and regeneration of the Fe 2 + from electroreduction of Fe 3 + (Eq. (9)) generated in this reaction.…”

Nanostructured Diamond Electrodes for Energy Conversion Applications

“…Typical CVD diamond synthesis includes activation of a gas mixture, gas phase reactions and a subsequent transfer of the diamond forming gas species onto the substrate surface [3]. To obtain conducting material boron was introduced in the reactions chamber during the growth process.…”