1454921-72-2

Upstream product

• 1368136-83-7 5-bromothieno-[3,2-b]-thiophene-2-carbaldehyde 
• 31486-86-9 thieno[3,2-b]thiophene-2-carbaldehyde 
• 251-41-2 thieno[3,2-b]thiophene 
• 1352420-69-9 5,11-dihexyl-6,12-diphenyl-5,11-dihydroindolo[3,2-b]carbazole 
• 1352420-72-4 5,11-dihexyl-6,12-diphenyl-5,6,11,12-tetrahydroindolo[3,2-b]carbazole 
• 120-72-9 indole 
• 29670-53-9 6,12-diphenyl-5,6,11,12-tetrahydroindolo[3,2-b]carbazole 

Relevant academic research and scientific papers

Efficient and stable DSSC sensitizers based on substituted dihydroindolo[2,3-b]carbazole donors with high molar extinction coefficients

Four novel metal-free organic sensitizers based on 5,7-dihexyl-6,12- diphenyl-5,7-dihydroindolo[2,3-b]carbazole (DDC) donors have been synthesized. Their optical/electrochemical properties, dye-sensitized solar cell (DSSCs) performances and photo-stability upon successive irradiation for 30 min have been investigated. The optical data indicates that all these dyes showed a high molar extinction coefficient (5.6-6.3 × 104 M-1 cm-1). Under standard global AM 1.5 solar light condition, the DDC4 sensitized cell gave a short circuit photocurrent density (Jsc) of 14.81 mA cm-2, an open circuit voltage (Voc) of 0.688 V, and a fill factor (FF) of 0.69, corresponding to an overall efficiency (η) of 7.03%. The benzothiadiazole units and thieno[3,2-b]thiophene (TT) in the π spacer were found to increase the photo-stability of the corresponding dyes and these dyes based on this donor are promising candidates for the further application in DSSCs.