Abstract:
PURPOSE: A method for manufacturing a bulk hetero junction inorganic thin film solar cell based on a solution process is provided to improve solar cell efficiency by minimizing a moving distance between an electrode and electrons or holes by a bulk hetero junction. CONSTITUTION: A ClG precursor-n type semiconductor nanoparticle paste or ink is obtained by adding polymer binder after the n type semiconductor nanoparticle dispersion solutions are mixed with Cu, In, and Ga precursor solutions(101). After a conductive substrate is coated with ClG precursor-n type semiconductor nanoparticle paste or ink(102), a ClG oxide-n type semiconductor mixed thin film is made by a thermal process under an air or oxygen atmosphere(103). Sulfurization or selenization ClGS-n type semiconductor thin film is made by thermally processing the ClG oxide thin film under sulfurization or selenization gas atmosphere(104). [Reference numerals] (100) Cu, In, Ga precursor; (101) CIG precursor-N type semiconductor nanoparticles mixing paste; (102) Mixed paste coating; (103) Thermal process 1 ClG-N type semiconductor mixed thin film; (104) Thermal process 2 sulfurization or selenization CIGS-N type semiconductor mixed thin film; (105) Manufacturing a device
Abstract:
목질계 바이오매스를 가수분해 전처리한 당화액을 준비하는 단계 및 상기 당화액에 전기화학적 제독 방법을 이용하여 독성을 감소시키는 단계를 포함하는, 독성이 감소 또는 제거된 목질계 바이오매스 당화액의 제조방법이 제공된다. 상기 방법은 전처리 과정 중에 생성되는 미생물 생장 및 발효를 저해하는 화합물들의 독성을 효율적으로 제거할 수 있다. 또한 독성 제거 과정 중에 당의 손실과 부가적인 비용을 최소화함으로써 생산효율을 높일 수 있다.
Abstract:
본 발명은 금속 촉매와 산 촉매를 통합한 이작용기성 촉매를 구아이아콜을 포함하는 바이오매스에 가하는 단계를 포함하는 바이오연료의 제조방법을 제공한다. 본 발명의 제조방법은 리그닌 또는 바이오매스의 분해 및 전환에 의한 석유대체연료 개발에 적용될 수 있어서, 비석유기반 바이오연료의 제조방법을 제공하는 장점이 있다.
Abstract:
PURPOSE: A method for manufacturing graphene sheets or graphene particles based on supercritical fluid is provided to mass-produce the graphene sheets or graphene particles of high quality by implementing deoxygenation with respect to graphene oxide under a supercritical fluid condition. CONSTITUTION: A method for manufacturing graphene sheets or graphene particles based on supercritical fluid includes the following: graphene oxide is dispersed in an alcohol solvent to form a graphene oxide dispersed solution; the graphene oxide dispersed solution is reduced under a supercritical condition to form graphene sheets or graphene particles; and the graphene sheets or the graphene particles are separated, washed, and dried. The graphene oxide includes at least one functional group selected from an epoxy group, a carboxylic group, a carbonyl group, and a hydroxyl group.