Morphological control of hybrid polymer-quantum dot solar cells with electron acceptor ligands

被引：4

作者：

Boivin, Mathieu ^{[1
]}

Lamarre, Sebastien ^{[1
]}

Tessier, Jonathan ^{[1
]}

Lecavalier, Marie-Eve ^{[1
]}

Najari, Ahmed ^{[2
]}

Dufour-Beausejour, Sophie ^{[1
]}

Dussault, Evelyne Brown ^{[1
]}

Collin, Pierre ^{[1
]}

Allen, Claudine Ni ^{[1
]}

机构：

[1] Univ Laval, COPL, Dept Phys Genie Phys & Opt, Quebec City, PQ G1V 0A6, Canada

[2] Univ Laval, Dept Chim, Quebec City, PQ G1V 0A6, Canada

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

PHOTOVOLTAIC DEVICES; CDSE NANOCRYSTALS; POLY(3-HEXYLTHIOPHENE); PHOTOLUMINESCENCE; COMPOSITES; EFFICIENCY; TRANSPORT; SURFACE; BLENDS;

D O I：

10.1063/1.3678603

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We integrate the electro-attractive conjugated molecule tetrafluoro-tetracyano-quinodimethane (F(4)TCNQ) in the active layer of polymer-CdSe colloidal quantum dot (cQD) solar cells. The addition of this molecule enhances cQD dispersion inside the polymer. In tuning its concentration, we can optimize the active layer morphology for charge separation and transport. A smoother morphology is likely the result of polymer chain adsorption on cQDs via F(4)TCNQ which increases the steric barrier between cQDs. Our most optimized device has a F(4)TCNQ:cQDs weight ratio of 0.5% improving the power conversion efficiency by a factor similar to 2.3. (C) 2012 American Institute of Physics. [doi:10.1063/1.3678603]

引用

页数：3

共 19 条

[1]

Aldakov D., 2006, EUR PHYS J, V36, P5

[2] Nucleation and growth kinetics of CdSe nanocrystals in octadecene [J].

Bullen, CR ;

Mulvaney, P .

NANO LETTERS, 2004, 4 (12) :2303-2307

[3] Improving the Reproducibility of P3HT:PCBM Solar Cells by Controlling the PCBM/Cathode Interface [J].

de Villers, Bertrand Tremolet ;

Tassone, Christopher J. ;

Tolbert, Sarah H. ;

Schwartz, Benjamin J. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (44) :18978-18982

[4] Charge injection and transport in films of CdSe nanocrystals [J].

Ginger, DS ;

Greenham, NC .

JOURNAL OF APPLIED PHYSICS, 2000, 87 (03) :1361-1368

[5] Charge separation and transport in conjugated-polymer/semiconductor-nanocrystal composites studied by photoluminescence quenching and photoconductivity [J].

Greenham, NC ;

Peng, XG ;

Alivisatos, AP .

PHYSICAL REVIEW B, 1996, 54 (24) :17628-17637

[6] Hybrid solar cells with prescribed nanoscale morphologies based on hyperbranched semiconductor nanocrystals [J].

Gur, Ilan ;

Fromer, Neil A. ;

Chen, Chih-Ping ;

Kanaras, Antonios G. ;

Alivisatos, A. Paul .

NANO LETTERS, 2007, 7 (02) :409-414

[7] Morphology of polymer/fullerene bulk heterojunction solar cells [J].

Hoppe, H ;

Sariciftci, NS .

JOURNAL OF MATERIALS CHEMISTRY, 2006, 16 (01) :45-61

[8] Hybrid nanorod-polymer solar cells [J].

Huynh, WU ;

Dittmer, JJ ;

Alivisatos, AP .

SCIENCE, 2002, 295 (5564) :2425-2427

[9] Controlling the morphology of nanocrystal-polymer composites for solar cells [J].

Huynh, WU ;

Dittmer, JJ ;

Libby, WC ;

Whiting, GL ;

Alivisatos, AP .

ADVANCED FUNCTIONAL MATERIALS, 2003, 13 (01) :73-79

[10] Colloidal nanocrystal solar cells [J].

Kumar, Sandeep ;

Scholes, Gregory D. .

MICROCHIMICA ACTA, 2008, 160 (03) :315-325

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