Patent ID: 7491642
Filing Date: 2009-02-17
Classification: H01L,Y02E

Abstract:
1. A process for forming a semiconductor substrate, comprising: providing a monocrystalline silicon-containing material having a porosity of not more than 30%, H-terminated and having a surface substantially free of oxidation; and forming an organic layer having more than half of its atoms being carbon and hydrogen in the presence of an alcohol-ferrocene solution, wherein the organic layer is chemically bonded to the surface of the silicon-containing material, wherein an electrical property selected from surface recombination velocity, carrier lifetime, electronic efficiency, voltage, device capacitance, contact resistance, and resistance of a doped region of the semiconductor substrate is changed at compared to the electrical property of the substrate in the absence of the organic layer, thereby forming a semiconductor substrate, and wherein as a result of said organic layer being chemically bonded to the surface of the silicon-containing material, said surface comprises a measurable carrier lifetime for low-level injection of more than approximately 7.8 μs or for high-level injection of more than approximately 12 μs, or a measurable surface recombination velocity of less than approximately 1300 cm/s for low-level injection or 810 cm/s for high-level injection.