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公开(公告)号:KR1020030059936A
公开(公告)日:2003-07-12
申请号:KR1020020000355
申请日:2002-01-03
IPC: H01L21/203 , B82Y40/00
Abstract: PURPOSE: A new process for forming silicon nano crystal is provided to be capable of forming a silicon nano crystal by using natively formed Au nano grains as an etching mask. CONSTITUTION: After sequentially depositing an SiO2 oxide layer(2) and an amorphous silicon thin film on an Si substrate(1), an oxide layer(3) is activated and the amorphous silicon thin film is transformed into a polycrystalline silicon thin film(4) by carrying out a heat treatment at the temperature of 1000 °C under nitrogen gas atmosphere for 10 minutes. After depositing an Au thin film on the resultant structure, Au nano grains(5) are formed by carrying out a heat treatment at the temperature of 550 °C for 2 minutes. Then, a silicon nano crystal is formed by selectively etching the oxide layer(3) and the polycrystalline silicon thin film(4) using the Au nano grains as an etching mask.
Abstract translation: 目的:提供一种用于形成硅纳米晶体的新工艺,以能够通过使用天然形成的Au纳米晶粒作为蚀刻掩模来形成硅纳米晶体。 构成:在Si衬底(1)上依次沉积SiO 2氧化物层(2)和非晶硅薄膜后,激活氧化物层(3),将非晶硅薄膜转变成多晶硅薄膜(4 )通过在氮气气氛下在1000℃的温度下进行10分钟的热处理。 在所得结构上沉积Au薄膜后,通过在550℃的温度下进行2分钟的热处理形成Au纳米晶粒(5)。 然后,通过使用Au纳米晶粒作为蚀刻掩模选择性地蚀刻氧化物层(3)和多晶硅薄膜(4)来形成硅纳米晶体。
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