Charge Separation in a Nonfluorescent Donor−Acceptor Dyad Derived from Boron Dipyrromethene Dye, Leading to Photocurrent Generation

2005 ◽  
Vol 109 (32) ◽  
pp. 15368-15375 ◽  
Author(s):  
Shigeki Hattori ◽  
Kei Ohkubo ◽  
Yasuteru Urano ◽  
Hisato Sunahara ◽  
Tetsuo Nagano ◽  
...  
Keyword(s):  
Charge Separation ◽  
Photocurrent Generation ◽  
Boron Dipyrromethene ◽  
Donor Acceptor

scholarly journals Charge Separation in a Nonfluorescent Donor−Acceptor Dyad Derived from Boron Dipyrromethene Dye, Leading to Photocurrent Generation

2005 ◽  
Vol 109 (40) ◽  
pp. 19042-19042 ◽  
Author(s):  
Shigeki Hattori ◽  
Kei Ohkubo ◽  
Yasuteru Urano ◽  
Hisato Sunahara ◽  
Tetsuo Nagano ◽  
...  
Keyword(s):  
Charge Separation ◽  
Photocurrent Generation ◽  
Boron Dipyrromethene ◽  
Donor Acceptor

scholarly journals Vibronic coherence contributes to photocurrent generation in organic semiconductor heterojunction diodes

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Qingzhen Bian ◽  
Fei Ma ◽  
Shula Chen ◽  
Qi Wei ◽  
Xiaojun Su ◽  
...  
Keyword(s):  
Charge Separation ◽  
Quantum Coherence ◽  
Transient Absorption ◽  
Excitation Energy Transfer ◽  
Low Frequency ◽  
Decisive Role ◽  
Photosynthetic Reaction Centers ◽  
Photocurrent Generation ◽  
Photocurrent Spectroscopy ◽  
Donor Acceptor

AbstractCharge separation dynamics after the absorption of a photon is a fundamental process relevant both for photosynthetic reaction centers and artificial solar conversion devices. It has been proposed that quantum coherence plays a role in the formation of charge carriers in organic photovoltaics, but experimental proofs have been lacking. Here we report experimental evidence of coherence in the charge separation process in organic donor/acceptor heterojunctions, in the form of low frequency oscillatory signature in the kinetics of the transient absorption and nonlinear two-dimensional photocurrent spectroscopy. The coherence plays a decisive role in the initial ~200 femtoseconds as we observe distinct experimental signatures of coherent photocurrent generation. This coherent process breaks the energy barrier limitation for charge formation, thus competing with excitation energy transfer. The physics may inspire the design of new photovoltaic materials with high device performance, which explore the quantum effects in the next-generation optoelectronic applications.

Influence of metal phthalocyanine molecular orientation on charge separation at organic donor/acceptor interface

2021 ◽  
Author(s):  
Heeseon Lim ◽  
Sena Yang ◽  
Sang-Hoon Lee ◽  
Jung-Yong Lee ◽  
Yeunhee Lee ◽  
...  
Keyword(s):  
Solar Cell ◽  
Charge Separation ◽  
Molecular Orientation ◽  
Organic Solar Cell ◽  
Metal Phthalocyanine ◽  
Dipole Orientation ◽  
Highly Efficient ◽  
Donor Acceptor

To achieve a highly efficient organic solar cell (OPVs), control of molecular orientation is one of prime important factors, for interfacial dipole orientation and energy offset at donor/acceptor (D/A) interface...

Improving Photocurrent Generation: Supramolecularly and Covalently Functionalized Single-Wall Carbon Nanotubes-Polymer/Porphyrin Donor-Acceptor Nanohybrids

2008 ◽  
Vol 14 (29) ◽  
pp. 8837-8846 ◽  
Author(s):  
G. M. Aminur Rahman ◽  
Anna Troeger ◽  
Vito Sgobba ◽  
Dirk M. Guldi ◽  
Norbert Jux ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Photocurrent Generation ◽  
Donor Acceptor

Supramolecular Donor−Acceptor Heterojunctions by Vectorial Stepwise Assembly of Porphyrins and Coordination-Bonded Fullerene Arrays for Photocurrent Generation

2009 ◽  
Vol 131 (9) ◽  
pp. 3198-3200 ◽  
Author(s):  
Aiko Kira ◽  
Tomokazu Umeyama ◽  
Yoshihiro Matano ◽  
Kaname Yoshida ◽  
Seiji Isoda ◽  
...  
Keyword(s):  
Photocurrent Generation ◽  
Donor Acceptor ◽  
Stepwise Assembly

Charge separation in linked tris(2,2'-(bipyridine)-ruthenium donor-acceptor complexes

1991 ◽  
Vol 95 (26) ◽  
pp. 10694-10700 ◽  
Author(s):  
L. F. Cooley ◽  
S. L. Larson ◽  
C. M. Elliott ◽  
D. F. Kelley
Keyword(s):  
Charge Separation ◽  
Donor Acceptor

Inter versus intra-molecular photoinduced charge separation in solid films of donor–acceptor molecules

2008 ◽  
pp. 4915 ◽  
Author(s):  
Safa Shoaee ◽  
Mattias P. Eng ◽  
Zesheng An ◽  
Xuan Zhang ◽  
Stephen Barlow ◽  
...  
Keyword(s):  
Charge Separation ◽  
Solid Films ◽  
Photoinduced Charge Separation ◽  
Donor Acceptor ◽  
Photoinduced Charge ◽  
Acceptor Molecules
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