Abstract:
PURPOSE: A nanoparticle precursor for optical absorption, a manufacture method thereof, and nano particle for the high quality optical absorption using thereof are provided to manufacture the nanoparticle precursor without using toxic material. CONSTITUTION: A manufacturing method of nano particle precursor for optical absorption comprises the following steps: preparing reaction solution which includes Cu, S and at least one of In and Ga; adjusting pH of the reaction solution; forming nanoparticle precursor for optical absorption by irradiating Microwave to the pH adjusted reaction solution; and separating nanoparticle precursor for optical absorption. A composition ratio of Cu, S, In, or Ga are adjusted in accordance with pH of the reaction solution. The nano particle precursor for optical absorption is one of the following precursors: CuInS2[CIS]nano particle precursor, Cu(In,Ga)S2[CIGS] nano particle precursor, CuIn(S,Se)2[CISS]nano particle precursor, or Cu(In,Ga)(S,Se)2[CIGSS] nano particle precursor. The Microwave irradiates in 100-700W power for 5 minutes to 1 hour.
Abstract:
본 발명은 광흡수 나노입자에 관한 것으로, 보다 구체적으로는 독성물질을 사용하지 않아 친환경적이면서도 보다 저가의 공정을 통해 태양전지 박막에 사용될 수 있는 광흡수 나노입자 전구체 및 그 제조방법과 그 전구체를 이용한 고품질 광흡수 나노입자 및 그 나노입자 제조방법에 관한 것이다.