Efficient solution-processed small molecule: Cadmium selenide quantum dot bulk heterojunction solar cells

Vinay Gupta; Tanvi Upreti; Suresh Chand

doi:10.1063/1.4850215

Efficient solution-processed small molecule: Cadmium selenide quantum dot bulk heterojunction solar cells

Vinay Gupta
, Tanvi Upreti
, Suresh Chand

Physics

CSIR-National Physical Laboratory Dr. K. S. Krishnan Marg

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

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 (J_sc) = 5.45 mA/cm², open circuit voltage (V_oc) = 0.727 V, and fill factor (FF) = 51%, and a power conversion efficiency = 2.02% at 100 mW/cm² under AM1.5G illumination. The J_sc and FF are sensitive to the ratio of p-DTS(FBTTh₂)₂:CdSe, which is a crucial factor for the device performance.

Original language	British English
Article number	253901
Journal	Applied Physics Letters
Volume	103
Issue number	25
DOIs	https://doi.org/10.1063/1.4850215
State	Published - 16 Dec 2013

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title = "Efficient solution-processed small molecule: Cadmium selenide quantum dot bulk heterojunction solar cells",

abstract = "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.",

author = "Vinay Gupta and Tanvi Upreti and Suresh Chand",

note = "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. ",

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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.

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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 - https://www.scopus.com/pages/publications/84891389199

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DO - 10.1063/1.4850215

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VL - 103

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 25

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ER -

Efficient solution-processed small molecule: Cadmium selenide quantum dot bulk heterojunction solar cells

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