DataVXACS Applied Materials & InterfacesPaper
journal article·2017-06-07Open access

Energy Transfer Kinetics in Photosynthesis as an Inspiration for Improving Organic Solar Cells

Collins Nganou, Gerhard Lackner, Bezu Teschome, M. Jamal Deen, Noam Adir, David Pouhe, Doru C. Lupascu, Martin Mkandawire

ACS Applied Materials & Interfaces· Volume 9· Issue 22
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Source abstract

Abstract

Clues to designing highly efficient organic solar cells may lie in understanding the architecture of light-harvesting systems and exciton energy transfer (EET) processes in very efficient photosynthetic organisms. Here, we compare the kinetics of excitation energy tunnelling from the intact phycobilisome (PBS) light-harvesting antenna system to the reaction center in photosystem II in intact cells of the cyanobacterium Acaryochloris marina with the charge transfer after conversion of photons into photocurrent in vertically aligned carbon nanotube (va-CNT) organic solar cells with poly(3-hexyl)thiophene (P3HT) as the pigment. We find that the kinetics in electron hole creation following excitation at 600 nm in both PBS and va-CNT solar cells to be 450 and 500 fs, respectively. The EET process has a 3 and 14 ps pathway in the PBS, while in va-CNT solar cell devices, the charge trapping in the CNT takes 11 and 258 ps. We show that the main hindrance to efficiency of va-CNT organic solar cells is the slow migration of the charges after exciton formation.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Photosynthetic Processes and Mechanisms · Spectroscopy and Quantum Chemical Studies · Photoreceptor and optogenetics research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Verschuren Centre for Sustainability in Energy and the Environment, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada

Institute for Materials Science, University of Duisburg-Essen and Centre for Nanointegration Duisburg-Essen (CeNIDE), Essen 45141, Germany

Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany

Electrical and Computer Engineering, McMaster University, 1280 Main Street, West Hamilton, Ontario L8S 4K1, Canada

Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 32000 Israel

Reutlingen University of Applied Sciences, Alteburgstrase 150, 72762 Reutlingen, Germany

Funding

United States-Israel Binational Science Foundation · Bundesministerium f?r Bildung und Forschung · Israel Science Foundation · Technische Universit?t Dresden · Natural Sciences and Engineering Research Council of Canada · Technische Universit?t Berlin · Universit?t Duisburg-Essen · Public Services and Procurement Canada

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