Abstract:
본 발명은 하기 화학식 1 또는 화학식 2의 신규한 니켈 아미노알콕사이드 화합물에 관한 것으로, 본 발명에 따른 니켈 선구 물질은 상온에서 고체 상태로 존재하며 증기압이 매우 높아 자성 물질 박막의 증착 또는 여러 가지 합금의 증착에 니켈의 원료 물질로서 유용하게 사용할 수 있다:
상기 식에서, m은 1 내지 3 의 정수이고, n은 2 내지 4 의 정수이며, R 및 R'은 C 1 -C 4 의 선형 또는 분지형 알킬기이다.
Abstract:
Volatile nickel aminoalkoxide complexes, a preparation method thereof and a process for formation of a nickel thin film by using the same compounds are provided, which compounds have high volatility and sufficient thermal stability, and are reduced to nickel by self-pyrolysis without a reducing agent. so that the compounds are useful as a MOCVD(metal organic chemical vapor deposition) precursor for formation of the nickel thin film. The volatile nickel aminoalkoxide complexes represented by formula (1) are provided, wherein m is an integer of 1 to 3; and R and R' are C1-C4 linear or branched alkyl. The volatile nickel aminoalkoxide complexes represented by formula (2) are provided, wherein m is an integer of 1 to 3; n is an integer of 2 to 4; and R and R' are C1-C4 linear or branched alkyl. The method for preparing the volatile nickel aminoalkoxide complexes of formula (1) or (2) comprises a halogenized hexamine nickel compound of Ni(NH3)6X2 with an alkali metal salt of aminoalkoxide of MOCR'2(CH2)mNR2 or MOCR'2(CH2)mO(CH2)nNR2, wherein X is Cl, Br or I; and M is Li or Na. The process for formation of the nickel thin film comprises growing the nickel thin film by using the volatile nickel aminoalkoxide complexes of formula (1) or (2) as a precursor at 250 to 350 deg. C.