Molecular Engineering of Push-Pull Chromophore for Efficient Bulk-Heterojunction Morphology in Solution Processed Small Molecule Organic Photovoltaics
소속 :
연사 : Prof. Jae-Jung Ko (Korea University, Department of Matierial Chemistry )
일시 : 2011-10-20 17:00 ~
장소 : 500동 목암홀
일 시 : 2011년 10월 20일, 오후 5:00
장 소 : 500동 목암홀
-Abstract-
Solution processed organic solar cells based on bulk-heterojunction (BHJ) materials comprising of small molecule chromophores and fullerene derivatives have offered special opportunities showing their promising power-conversion efficiencies (PCE) of above 4% as attractive alternatives to p-conjugated (semiconducting) polymers. Although the BHJ devices fabricated by small molecule chromophore present lower efficiency than ~7% of that by polymer, these approaches by small molecule seem to fascinate more than polymer from the viewpoint of mass production for commercial application due to their low reproducibility for characteristics such as average molecular weight(Mw) and polydispersityindex(PDI) as well
as difficulty in purification. We have also focused on the development of
new chromophores for small molecule BHJ solarcell, which are motivated by organic dyes in dye-sensitized solarcell(DSSC) and push-pull chromopor
-es in nonlinear optics(NLO) due to a strong structural similarity with small molecule chromophores reported in BHJ solar cell.
장 소 : 500동 목암홀
-Abstract-
Solution processed organic solar cells based on bulk-heterojunction (BHJ) materials comprising of small molecule chromophores and fullerene derivatives have offered special opportunities showing their promising power-conversion efficiencies (PCE) of above 4% as attractive alternatives to p-conjugated (semiconducting) polymers. Although the BHJ devices fabricated by small molecule chromophore present lower efficiency than ~7% of that by polymer, these approaches by small molecule seem to fascinate more than polymer from the viewpoint of mass production for commercial application due to their low reproducibility for characteristics such as average molecular weight(Mw) and polydispersityindex(PDI) as well
as difficulty in purification. We have also focused on the development of
new chromophores for small molecule BHJ solarcell, which are motivated by organic dyes in dye-sensitized solarcell(DSSC) and push-pull chromopor
-es in nonlinear optics(NLO) due to a strong structural similarity with small molecule chromophores reported in BHJ solar cell.
