Luminescent GdVO4:Sm3+ quantum dots enhance power conversion efficiency of bulk heterojunction polymer solar cells by Förster resonance energy transfer

Swati Bishnoi; Vinay Gupta; Chhavi Sharma; D. Haranath; Sheerin Naqvi; Mahesh Kumar; Gauri D. Sharma; Suresh Chand

doi:10.1063/1.4958690

Luminescent GdVO₄:Sm³⁺ quantum dots enhance power conversion efficiency of bulk heterojunction polymer solar cells by Förster resonance energy transfer

Swati Bishnoi
, Vinay Gupta
, Chhavi Sharma
, D. Haranath
, Sheerin Naqvi
, Mahesh Kumar
, Gauri D. Sharma
, Suresh Chand

Physics

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

14 Scopus citations

Abstract

In this work, we report enhanced power conversion efficiency (PCE) of bulk heterojunction polymer solar cells by Förster resonance energy transfer (FRET) from samarium-doped luminescent gadolinium orthovanadate (GdVO₄:Sm³⁺) quantum dots (QDs) to polythieno[3,4-b]-thiophene-co-benzodithiophene (PTB7) polymer. The photoluminescence emission spectrum of GdVO₄:Sm³⁺ QDs overlaps with the absorption spectrum of PTB7, leading to FRET from GdVO₄:Sm³⁺ to PTB7, and significant enhancements in the charge-carrier density of excited and polaronic states of PTB7 are observed. This was confirmed by means of femtosecond transient absorption spectroscopy. The FRET from GdVO₄:Sm³⁺ QDs to PTB7 led to a remarkable increase in the power conversion efficiency (PCE) of PTB7:GdVO₄:Sm³⁺:PC₇₁BM ([6,6]-phenyl-C₇₁-butyric acid methyl ester) polymer solar cells. The PCE in optimized ternary blend PTB7:GdVO₄:Sm³⁺:PC₇₁BM (1:0.1:1.5) is increased to 8.8% from 7.2% in PTB7:PC₇₁BM. This work demonstrates the potential of rare-earth based luminescent QDs in enhancing the PCE of polymer solar cells.

Original language	British English
Article number	023902
Journal	Applied Physics Letters
Volume	109
Issue number	2
DOIs	https://doi.org/10.1063/1.4958690
State	Published - 11 Jul 2016

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title = "Luminescent GdVO4:Sm3+ quantum dots enhance power conversion efficiency of bulk heterojunction polymer solar cells by F{\"o}rster resonance energy transfer",

abstract = "In this work, we report enhanced power conversion efficiency (PCE) of bulk heterojunction polymer solar cells by F{\"o}rster resonance energy transfer (FRET) from samarium-doped luminescent gadolinium orthovanadate (GdVO4:Sm3+) quantum dots (QDs) to polythieno[3,4-b]-thiophene-co-benzodithiophene (PTB7) polymer. The photoluminescence emission spectrum of GdVO4:Sm3+ QDs overlaps with the absorption spectrum of PTB7, leading to FRET from GdVO4:Sm3+ to PTB7, and significant enhancements in the charge-carrier density of excited and polaronic states of PTB7 are observed. This was confirmed by means of femtosecond transient absorption spectroscopy. The FRET from GdVO4:Sm3+ QDs to PTB7 led to a remarkable increase in the power conversion efficiency (PCE) of PTB7:GdVO4:Sm3+:PC71BM ([6,6]-phenyl-C71-butyric acid methyl ester) polymer solar cells. The PCE in optimized ternary blend PTB7:GdVO4:Sm3+:PC71BM (1:0.1:1.5) is increased to 8.8\% from 7.2\% in PTB7:PC71BM. This work demonstrates the potential of rare-earth based luminescent QDs in enhancing the PCE of polymer solar cells.",

author = "Swati Bishnoi and Vinay Gupta and Chhavi Sharma and D. Haranath and Sheerin Naqvi and Mahesh Kumar and Sharma, \{Gauri D.\} and Suresh Chand",

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AU - Bishnoi, Swati

AU - Gupta, Vinay

AU - Sharma, Chhavi

AU - Haranath, D.

AU - Naqvi, Sheerin

AU - Kumar, Mahesh

AU - Sharma, Gauri D.

AU - Chand, Suresh

PY - 2016/7/11

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N2 - In this work, we report enhanced power conversion efficiency (PCE) of bulk heterojunction polymer solar cells by Förster resonance energy transfer (FRET) from samarium-doped luminescent gadolinium orthovanadate (GdVO4:Sm3+) quantum dots (QDs) to polythieno[3,4-b]-thiophene-co-benzodithiophene (PTB7) polymer. The photoluminescence emission spectrum of GdVO4:Sm3+ QDs overlaps with the absorption spectrum of PTB7, leading to FRET from GdVO4:Sm3+ to PTB7, and significant enhancements in the charge-carrier density of excited and polaronic states of PTB7 are observed. This was confirmed by means of femtosecond transient absorption spectroscopy. The FRET from GdVO4:Sm3+ QDs to PTB7 led to a remarkable increase in the power conversion efficiency (PCE) of PTB7:GdVO4:Sm3+:PC71BM ([6,6]-phenyl-C71-butyric acid methyl ester) polymer solar cells. The PCE in optimized ternary blend PTB7:GdVO4:Sm3+:PC71BM (1:0.1:1.5) is increased to 8.8% from 7.2% in PTB7:PC71BM. This work demonstrates the potential of rare-earth based luminescent QDs in enhancing the PCE of polymer solar cells.

AB - In this work, we report enhanced power conversion efficiency (PCE) of bulk heterojunction polymer solar cells by Förster resonance energy transfer (FRET) from samarium-doped luminescent gadolinium orthovanadate (GdVO4:Sm3+) quantum dots (QDs) to polythieno[3,4-b]-thiophene-co-benzodithiophene (PTB7) polymer. The photoluminescence emission spectrum of GdVO4:Sm3+ QDs overlaps with the absorption spectrum of PTB7, leading to FRET from GdVO4:Sm3+ to PTB7, and significant enhancements in the charge-carrier density of excited and polaronic states of PTB7 are observed. This was confirmed by means of femtosecond transient absorption spectroscopy. The FRET from GdVO4:Sm3+ QDs to PTB7 led to a remarkable increase in the power conversion efficiency (PCE) of PTB7:GdVO4:Sm3+:PC71BM ([6,6]-phenyl-C71-butyric acid methyl ester) polymer solar cells. The PCE in optimized ternary blend PTB7:GdVO4:Sm3+:PC71BM (1:0.1:1.5) is increased to 8.8% from 7.2% in PTB7:PC71BM. This work demonstrates the potential of rare-earth based luminescent QDs in enhancing the PCE of polymer solar cells.

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Luminescent GdVO₄:Sm³⁺ quantum dots enhance power conversion efficiency of bulk heterojunction polymer solar cells by Förster resonance energy transfer

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