TY - JOUR
T1 - Efficient solution-processed small molecule
T2 - Cadmium selenide quantum dot bulk heterojunction solar cells
AU - Gupta, Vinay
AU - Upreti, Tanvi
AU - Chand, Suresh
N1 - Funding Information:
The authors would like to thank the director, NPL, for his support. The authors acknowledge DST for financial support in the Indo-UK energy initiative project entitled “Advancing the efficiency and production potential of excitonic solar cell (APEX)” for financial support. Vinay Gupta thanks Prof. Heeger and Indo-US Science and Technology Forum (IUSSTF), for Indo-US Research Fellowship/ 2012–2013/26–2012. Thanks are also due to Dr. G.D. Sharma, Mr. Ramil Bhardwaj, Mr. Neeraj Chaudhary, Dr. Sukhvir Singh, and Vidyanand for technical support.
PY - 2013/12/16
Y1 - 2013/12/16
N2 - We report bulk heterojunction solar cells based on blends of solution-processed small molecule [7,7′-(4,4-bis(2-ethylhexyl)-4H- silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl)bis(6-fluoro-4-(5′-hexyl- [2,2′-bithiophen]-5yl)benzo[c] [1,2,5] thiadiazole)] p-DTS(FBTTh 2)2: Cadmium Selenide (CdSe) (70:30, 60:40, 50:50, and 40:60) in the device configuration: Indium Tin Oxide /poly(3,4- ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/p-DTS(FBTTh 2)2: CdSe/Ca/Al. The optimized ratio of p-DTS(FBTTh 2)2:CdSe::60:40 leads to a short circuit current density (Jsc) = 5.45 mA/cm2, open circuit voltage (Voc) = 0.727 V, and fill factor (FF) = 51%, and a power conversion efficiency = 2.02% at 100 mW/cm2 under AM1.5G illumination. The Jsc and FF are sensitive to the ratio of p-DTS(FBTTh2)2:CdSe, which is a crucial factor for the device performance.
AB - We report bulk heterojunction solar cells based on blends of solution-processed small molecule [7,7′-(4,4-bis(2-ethylhexyl)-4H- silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl)bis(6-fluoro-4-(5′-hexyl- [2,2′-bithiophen]-5yl)benzo[c] [1,2,5] thiadiazole)] p-DTS(FBTTh 2)2: Cadmium Selenide (CdSe) (70:30, 60:40, 50:50, and 40:60) in the device configuration: Indium Tin Oxide /poly(3,4- ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/p-DTS(FBTTh 2)2: CdSe/Ca/Al. The optimized ratio of p-DTS(FBTTh 2)2:CdSe::60:40 leads to a short circuit current density (Jsc) = 5.45 mA/cm2, open circuit voltage (Voc) = 0.727 V, and fill factor (FF) = 51%, and a power conversion efficiency = 2.02% at 100 mW/cm2 under AM1.5G illumination. The Jsc and FF are sensitive to the ratio of p-DTS(FBTTh2)2:CdSe, which is a crucial factor for the device performance.
UR - http://www.scopus.com/inward/record.url?scp=84891389199&partnerID=8YFLogxK
U2 - 10.1063/1.4850215
DO - 10.1063/1.4850215
M3 - Article
AN - SCOPUS:84891389199
SN - 0003-6951
VL - 103
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 25
M1 - 253901
ER -