Understanding the charge transfer mechanism in a donor-acceptor cavity system

被引：0
作者：
Silori, Y. [1 ]
Liu, B. [2 ]
Lib, Y. [2 ]
Forrest, S. R. [1 ,2 ,3 ]
Ogilvie, J. P. [1 ,4 ]
机构：
[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA
[4] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada
来源：
PHYSICAL CHEMISTRY OF SEMICONDUCTOR MATERIALS AND INTERFACES XXIII | 2024年 / 13127卷
基金：
美国国家科学基金会;
关键词：
Polaritons; excitons; blend; bilayer; charge transfer; transient absorption spectroscopy;
D O I：
10.1117/12.3027855
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：
The performance of organic donor-acceptor heterojunctions in solar cell devices is fundamentally determined by factors such as charge separation efficiency, charge carrier mobility, exciton diffusion lengths, and energy losses due to exciton recombination. Despite advancements in organic photovoltaic materials, exciton transport is frequently hindered by structural disorder, which limits overall device efficiency. Exciton-polaritons, formed through the strong coupling of cavity-coupled organic materials, exhibit delocalized states that enhance exciton transport and reduce the effects of disorder. Thus, it is of interest to elucidate the influence of strong coupling on charge transfer dynamics in organic photovoltaic materials. Using transient absorption spectroscopy, we explore the effect of cavity-strong-coupling in DBP-C70 donor-acceptor blends integrated with a distributed Bragg reflector cavity. We find that the presence of the cavity slows the charge transfer process in such heterojunction systems.
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页数：4
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共 17 条
[1]   From enhanced diffusion to ultrafast ballistic motion of hybrid light-matter excitations [J].
Balasubrahmaniyam, Mukundakumar ;
Simkhovich, Arie ;
Golombek, Adina ;
Sandik, Gal ;
Ankonina, Guy ;
Schwartz, Tal .
NATURE MATERIALS, 2023, 22 (03) :338-+
[2]   Femtosecond Dynamics of Photoexcited C60 Films [J].
Causa', Martina ;
Ramirez, Ivan ;
Hardigree, Josue F. Martinez ;
Riede, Moritz ;
Banerji, Natalie .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2018, 9 (08) :1885-892
[3]   Polariton Decay in Donor-Acceptor Cavity Systems [J].
DelPo, Courtney A. ;
Khan, Saeed-Uz-Zaman ;
Park, Kyu Hyung ;
Kudisch, Bryan ;
Rand, Barry P. ;
Scholes, Gregory D. .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2021, 12 (40) :9774-9782
[4]   Ultralong-Range Energy Transport in a Disordered Organic Semiconductor at Room Temperature Via Coherent Exciton-Polariton Propagation [J].
Hou, Shaocong ;
Khatoniar, Mandeep ;
Ding, Kan ;
Qu, Yue ;
Napolov, Alexander ;
Menon, Vinod M. ;
Forrest, Stephen R. .
ADVANCED MATERIALS, 2020, 32 (28)
[5]   High-speed flow of interacting organic polaritons [J].
Lerario, Giovanni ;
Ballarini, Dario ;
Fieramosca, Antonio ;
Cannavale, Alessandro ;
Genco, Armando ;
Mangione, Federica ;
Gambino, Salvatore ;
Dominici, Lorenzo ;
De Giorgi, Milena ;
Gigli, Giuseppe ;
Sanvitto, Daniele .
LIGHT-SCIENCE & APPLICATIONS, 2017, 6 :e16212-e16212
[6]   Photocurrent generation following long-range propagation of organic exciton-polaritons [J].
Liu, Bin ;
Huang, Xinjing ;
Hou, Shaocong ;
Fan, Dejiu ;
Forrest, Stephen R. .
OPTICA, 2022, 9 (09) :1029-1036
[7]   Ultrafast thermal modification of strong coupling in an organic microcavity [J].
Liu, Bin ;
Menon, Vinod M. ;
Sfeir, Matthew Y. .
APL PHOTONICS, 2021, 6 (01)
[8]   The Role of Long-Lived Excitons in the Dynamics of Strongly Coupled Molecular Polaritons [J].
Liu, Bin ;
Menon, Vinod M. ;
Sfeir, Matthew Y. .
ACS PHOTONICS, 2020, 7 (08) :2292-2301
[9]   Low band gap conjugated polymers combining siloxane-terminated side chains and alkyl side chains: side-chain engineering achieving a large active layer processing window for PCE > 10% in polymer solar cells [J].
Liu, Xuncheng ;
Nian, Li ;
Gao, Ke ;
Zhang, Lianjie ;
Qing, Lechi ;
Wang, Zhen ;
Ying, Lei ;
Xie, Zengqi ;
Ma, Yuguang ;
Cao, Yong ;
Liu, Feng ;
Chen, Junwu .
JOURNAL OF MATERIALS CHEMISTRY A, 2017, 5 (33) :17619-17631
[10]   Efficient Charge Generation via Hole Transfer in Dilute Organic Donor-Fullerene Blends [J].
Song, Yin ;
Schubert, Alexander ;
Liu, Xiao ;
Bhandari, Srijana ;
Forrest, Stephen R. ;
Dunietz, Barry D. ;
Geva, Eitan ;
Ogilvie, Jennifer P. .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2020, 11 (06) :2203-2210
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