http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Jungwoon Kim,송창은,이상규,임은희 대한화학회 2016 Bulletin of the Korean Chemical Society Vol.37 No.2
We synthesized two new thieno[3,4-c]pyrrole-4,6-dione (TPD)- and diketopyrrolopyrrole (DPP)-based small molecules having pyridine end groups, TPDTPy and DPPTPy, using the Stille and Suzuki coupling reactions, respectively. The optical, electrochemical, and photovoltaic properties of these small molecules depended on the introduced electron-accepting units of TPD and DPP. DPPTPy exhibited a relatively low-energy bandgap (Eg) of 1.82 eV compared to TPDTPy (2.22 eV) because of the stronger electron-withdrawing ability of DPP compared to TPD. Organic photovoltaic cells with the inverted ITO/ZnO/small molecule:(6,6)-phenyl-C71-butyric acid methyl ester/MoO3/Ag structure were fabricated. The DPPTPy-based device showed a relatively high power conversion efficiency of 0.62% compared to TPDTPy (0.16%), mainly because of the red-shifted UV absorption, lower Eg, and the higher short-circuit current of DPPTPy.
이정운(Jungwoon Lee),윤재득(Jeadeuk Yun),박성배(Sungbae Park),정융호(Yoongho Jung) (사)한국CDE학회 2011 한국CDE학회 논문집 Vol.16 No.5
Large number of part design such as for aircraft and automotive development is preceded by functional or sectional design groups for efficiency. With the assembly development of large number of parts, interferences and gaps can be found when the parts and sub-assemblies by those design groups are to be assembled. When rainwater come into the space among parts and is not be drained sufficiently, rainwater within the structure can backflow to gaps or unexpected outlets, which may cause severe problems of part corrosion and electric shock. This research has developed a method and a program to simulate backflow of rainwater within space among parts, which can find unexpected outlets and gaps as in real situation. The developed program can not only simulate up and downstream of liquid, but also the flow with multiple channels of division and joining. The developed method can also be applied to aircraft and ship design process.