Charge transfer and quantum coherence in solar cells and artificial light harvesting system (presentation video)

Christoph Lienau

doi:10.1117/12.2063533

17 August 2014 Charge transfer and quantum coherence in solar cells and artificial light harvesting system (presentation video)

Christoph Lienau

Author Affiliations +

Proceedings Volume 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII; 91631R (2014) https://doi.org/10.1117/12.2063533
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

Abstract

In artificial light harvesting systems the conversion of light into elec- trical or chemical energy happens on the femtosecond time scale, and is thought to involve the incoherent jump of an electron from the optical absorber to an electron acceptor. Here we investigate the primary dynamics of the photoinduced electronic charge transfer pro- cess in two prototypical structures: (i) a carotene-porphyrin-fullerene triad, a prototypical elementary component for an artificial light har- vesting system and (ii) a polymer:fullerene blend as a model system for an organic solar cell. Our approach [1] combines coherent femtosec- ond spectroscopy and first-principles quantum dynamics simulations. Our experimental and theoretical results provide strong evidence that the driving mechanism of the primary step within the current gener- ation cycle is a quantum-correlated wavelike motion of electrons and nuclei on a timescale of few tens of femtoseconds. We furthermore high- light the fundamental role played by the flexible interface between the light-absorbing chromophore and the charge acceptor in triggering the coherent wavelike electron-hole splitting. [1] C. A. Rozzi et al., 'Quantum coherence controls the charge separation in a prototypical arti_cial light-harvesting system', Nature Communications 4, 1603 (2013).

Citation Download Citation

Christoph Lienau "Charge transfer and quantum coherence in solar cells and artificial light harvesting system (presentation video)", Proc. SPIE 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII, 91631R (17 August 2014); https://doi.org/10.1117/12.2063533

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available