Photobleaching dynamics in small molecule vs. polymer organic photovoltaic blends with 1,7-bis-trifluoromethylfullerene

被引:17
作者
Garner, Logan E. [1 ]
Viswanathan, Vinila Nellissery [2 ]
Arias, Dylan H. [1 ]
Brook, Colin P. [3 ]
Christensen, Steven T. [1 ]
Ferguson, Andrew J. [1 ]
Kopidakis, Nikos [1 ,4 ]
Larson, Bryon W. [1 ]
Owczarczyk, Zbyslaw R. [1 ]
Pfeilsticker, Jason R. [1 ]
Ramamurthy, Praveen C. [2 ]
Strauss, Steven H. [3 ]
Boltalina, Olga V. [3 ]
Braunecker, Wade A. [1 ]
机构
[1] Natl Renewable Energy Lab, 15013 Denver West Pkwy, Golden, CO 80401 USA
[2] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India
[3] Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA
[4] Macquarie Univ, Dept Engn, Sydney, NSW 2109, Australia
基金
美国国家科学基金会;
关键词
SOLAR-CELLS; MICROWAVE CONDUCTIVITY; CONJUGATED POLYMERS; CARRIER LIFETIMES; DEVICE EFFICIENCY; DIIODOOCTANE; PERFORMANCE; GENERATION; COPOLYMERS; SEPARATION;
D O I
10.1039/c7ta10995d
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Two organic photovoltaic (OPV) donor materials (one polymer and one small molecule) are synthesized from the same constituent building blocks, namely thiophene units, cyclopentathiophene dione (CTD), and cyclopentadithiophene (CPDT). Photobleaching dynamics of these donor materials are then studied under white light illumination in air with blends of PC70BM and the bis-trifluoromethylfullerene 1,7-C-60(CF3)(2). For both the polymer and small molecule blends, C-60(CF3)(2) stabilizes the initial rate of photobleaching by a factor of 15 relative to PC70BM. However, once the small molecule: C-60(CF3)(2) blend bleaches to similar to 80% of its initial optical density, the rate of photobleaching dramatically accelerates, which is not observed in the analogous polymer blend. We probe that phenomenon using time-resolved photoluminescence (TRPL) to measure PL quenching efficiencies at defined intervals during the photobleaching experiments. The data indicates the small molecule donor and C-60(CF3)(2) acceptor significantly de-mix with time, after which the blend begins to bleach at approximately the same rate as the neat donor sample. The work suggests that perfluoroalkylfullerenes have great potential to stabilize certain OPV active layers toward photodegradation, provided their morphology is stable.
引用
收藏
页码:4623 / 4628
页数:6
相关论文
共 30 条
[1]   Organic photovoltaics: technology and market [J].
Brabec, CJ .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2004, 83 (2-3) :273-292
[2]   Ethynylene-Linked Donor-Acceptor Alternating Copolymers [J].
Braunecker, Wade A. ;
Oosterhout, Stefan D. ;
Owczarczyk, Zbyslaw R. ;
Larsen, Ross E. ;
Larson, Bryon W. ;
Ginley, David S. ;
Boltalina, Olga V. ;
Strauss, Steven H. ;
Kopidakis, Nikos ;
Olson, Dana C. .
MACROMOLECULES, 2013, 46 (09) :3367-3375
[3]   Benzodithiophene and Imide-Based Copolymers for Photovoltaic Applications [J].
Braunecker, Wade A. ;
Owczarczyk, Zbyslaw R. ;
Garcia, Andres ;
Kopidakis, Nikos ;
Larsen, Ross E. ;
Hammond, Scott R. ;
Ginley, David S. ;
Olson, Dana C. .
CHEMISTRY OF MATERIALS, 2012, 24 (07) :1346-1356
[4]   Photoinduced electron transfer in composites of conjugated polymers and dendrimers with branched colloidal nanoparticles [J].
Dayal, Smita ;
Kopidakis, Nikos ;
Rumbles, Garry .
FARADAY DISCUSSIONS, 2012, 155 :323-337
[5]   Removal of Residual Diiodooctane Improves Photostability of High-Performance Organic Solar Cell Polymers [J].
de Villers, Bertrand J. Tremolet ;
O'Hara, Kathryn A. ;
Ostrowski, David P. ;
Biddle, Perry H. ;
Shaheen, Sean E. ;
Chabinyc, Michael L. ;
Olson, Dana C. ;
Kopidakis, Nikos .
CHEMISTRY OF MATERIALS, 2016, 28 (03) :876-884
[6]   Relating polymer chemical structure to the stability of polymer:fullerene solar cells [J].
Doumon, Nutifafa Y. ;
Wang, G. ;
Chiechi, Ryan C. ;
Koster, L. Jan Anton .
JOURNAL OF MATERIALS CHEMISTRY C, 2017, 5 (26) :6611-6619
[7]   Dark Carriers, Trapping, and Activation Control of Carrier Recombination in Neat P3HT and P3HT:PCBM Blends [J].
Ferguson, Andrew J. ;
Kopidakis, Nikos ;
Shaheen, Sean E. ;
Rumbles, Garry .
JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (46) :23134-23148
[8]   Roll-to-Roll Slot-Die Coated Organic Photovoltaic (OPV) Modules with High Geometrical Fill Factors [J].
Galagan, Yulia ;
Fledderus, Henri ;
Gorter, Harrie ;
't Mannetje, Hero H. ;
Shanmugam, Santhosh ;
Mandamparambil, Rajesh ;
Bosman, Johan ;
Rubingh, Jan-Eric J. M. ;
Teunissen, Jean-Pierre ;
Salem, Ahmed ;
de Vries, Ike G. ;
Andriessen, Ronn ;
Groen, Wilhelm A. .
ENERGY TECHNOLOGY, 2015, 3 (08) :834-842
[9]   Promoting Morphology with a Favorable Density of States Using Diiodooctane to Improve Organic Photovoltaic Device Efficiency and Charge Carrier Lifetimes [J].
Garner, Logan E. ;
Bera, Abhijit ;
Larson, Bryon W. ;
Ostrowski, David P. ;
Pal, Amlan J. ;
Braunecker, Wade A. .
ACS ENERGY LETTERS, 2017, 2 (07) :1556-1563
[10]   Barium: An Efficient Cathode Layer for Bulk-heterojunction Solar Cells [J].
Gupta, Vinay ;
Kyaw, Aung Ko Ko ;
Wang, Dong Hwan ;
Chand, Suresh ;
Bazan, Guillermo C. ;
Heeger, Alan J. .
SCIENTIFIC REPORTS, 2013, 3