Optical Helicity-Manipulated Photocurrents and Photovoltages in Organic Solar Cells
[2];
[3];
[1];
- Shandong Univ., Jinan (China). State Key Lab. of Crystal Materials and School of Physics
- Shandong Univ., Jinan (China). State Key Lab. of Crystal Materials and School of Physics; Univ. of Melbourne (Australia). ARC Centre of Excellence in Exciton Science and School of Chemistry
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
The performance of an organic functional device can be effectively improved through external field manipulation. In this study, we experimentally demonstrate the optical polarization manipulation of the photocurrent or photovoltage in organic solar cells. Through switching the incident light from a linearly polarized light to a circularly polarized one, we find a pronounced change in the photocurrent, which is not observable in normal inorganic cells. There are two competing hypotheses for the primary process underlying the circular polarization-dependent phenomena in organic materials, one involving the inverse Faraday effect (IFE) and the other a direct photon spin–electron spin interaction. By way of ingenious device design and external magnetic field-induced stimuli, it is expected that the organic IFE can be a powerful experimental tool in revealing and elucidating excited-state processes occurring in organic spintronic and optoelectronic devices. Therefore, we believe that our results will potentially lead to the development of new multifunctional organic devices with integrated electronic, optical, and magnetic properties for energy conversion, optical communication, and sensing technologies.
- Research Organization:
- Los Alamos National Laboratory (LANL)
- Sponsoring Organization:
- USDOE; National Natural Science Foundation of China (NSFC)
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1441335
- Report Number(s):
- LA-UR-18-20268; {"","Journal ID: ISSN 1932-7447"}
- Journal Information:
- Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 23 Vol. 122; ISSN 1932-7447
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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