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Si-SiOx superlattices are among the candidates that have been proposed as high band gap absorber material in all-Si tandem solar cell devices. Due to the large potential barriers for photoexited charge carriers, transport in these devices…

Mesoscale and Nanoscale Physics · Physics 2012-06-14 U. Aeberhard

Photoisomerization, i.e., a change of molecular structure after absorption of a photon, is one of the most fundamental photochemical processes. It can perform desirable functionality, e.g., as the primary photochemical event in human…

Mesoscale and Nanoscale Physics · Physics 2017-01-10 Javier Galego , Francisco J. Garcia-Vidal , Johannes Feist

Bose condensed light can form new phases [1] in a dye filled cavity due to the presence of the orientational disorder created by dye molecules which are essentially frozen on the time scale of the photonic thermalization (few ps). At longer…

Quantum Gases · Physics 2020-05-06 Victor Fleurov , Anatoly B. Kuklov

The theoretical and experimental study of energy transfer in photosynthesis has revealed an interesting transport regime, which lies at the borderline between classical transport dynamics and quantum-mechanical interference effects.…

Biological Physics · Physics 2014-02-13 Tobias Kramer , Christoph Kreisbeck

There is a remarkable characteristic of photosynthesis in nature, that is, the energy transfer efficiency is close to 100%. Recently, due to the rapid progress made in the experimental techniques, quantum coherent effects have been…

Chemical Physics · Physics 2020-02-25 Ming-Jie Tao , Na-Na Zhang , Peng-Yu Wen , Fu-Guo Deng , Qing Ai , Gui-Lu Long

Photon blockade is vital for single-photon generation, but current schemes with conventional and unconventional photon blockade face critical limitations like the purity-brightness trade-off, hindering the generation of high-performance…

Quantum Physics · Physics 2026-05-29 Sheng Zhao , Peng-Bo Li

Plant aliveness is proven through laboratory experiments and special scientific instruments. In this paper, we aim to detect the degree of animation of plants based on the magnification of the small color changes in the plant's green leaves…

Computer Vision and Pattern Recognition · Computer Science 2017-11-06 Islam A. T. F. Taj-Eddin , Mahmoud Afifi , Mostafa Korashy , Ali H. Ahmed , Ng Yoke Cheng , Evelyng Hernandez , Salma M. Abdel-latif

We are the first to show with clear experimental results that photons that have energy lower than the transition energy between quantum dots states and valance band can still contribute greatly to the photocurrent via both one-photon…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Tian Li , Mario Dagenais

GreenLab Model is a functional-structural plant growth model that combines both organogenesis (at each cycle, new organs are created with respect to genetic rules) and photosynthesis (organs are filled with the biomass produced by the…

Tissues and Organs · Quantitative Biology 2016-08-14 Amelie Mathieu , Paul-Henry Cournède , Philippe De Reffye

The rate at which matter emits or absorbs light can be modified by its environment, as dramatically exemplified by the widely-studied phenomenon of superradiance. The reverse process, superabsorption, is harder to demonstrate due to the…

Hybrid metal-organic perovskite solar cells have astounded the solar cell community with their rapid rise in efficiency over the past three years. Despite this success, the basic processes governing the photogeneration of free charges,…

Energy states below the bandgap of a semiconductor, such as trap states or charge transfer states in organic donor acceptor blends, can contribute to light absorption. Due to their low number density or ultrasmall absorption cross-section,…

Applied Physics · Physics 2019-11-27 Christina Kaiser , Stefan Zeiske , Paul Meredith , Ardalan Armin

The photovoltaic effect is one of the fundamental light-matter interactions in light energy harvesting. In conventional photovoltaic solar cells, the photogenerated charge carriers are extracted by the built-in electric field of a PN…

Mesoscale and Nanoscale Physics · Physics 2014-09-24 Michele Buscema , Dirk J. Groenendijk , Gary A. Steele , Herre S. J. van der Zant , Andres Castellanos-Gomez

Using a formalism adapted to study transport in quantum open systems, that is the nonequilibrium Green's function formalism, we revisit the working principle of the most popular photosynthetic complex, namely the Fenna Matthews-Olson…

Biological Physics · Physics 2024-10-23 A. -M Daré , C Demarez , J Missirian , F Michelini

Photothermal reactions, involving both photochemical and thermal reaction-steps, are the most abundant sequences in photochemistry. The derivation of their rate-laws is standardized, but the integration of these rate-laws has not yet been…

Chemical Physics · Physics 2025-01-13 Mounir Maafi

The incoherence of sunlight has long been suspected to have an impact on solar cell energy conversion efficiency, although the extent of this is unclear. Existing computational methods used to optimize solar cell efficiency under incoherent…

Optics · Physics 2014-01-16 Aline Herman , Michael Sarrazin , Olivier Deparis

Transport in molecular electronic devices is different from that in semiconductor mesoscopic devices in two important aspects: (1) the effect of the electronic structure and (2) the effect of the interface to the external contact. A…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Yongqiang Xue , Supriyo Datta , Mark A. Ratner

In green plants, chlorophyll-a and chlorophyll-b are the predominant pigments bound to light-harvesting proteins. While the individual characteristics of these chlorophylls are well understood, the advantages of their coexistence remain…

Data Analysis, Statistics and Probability · Physics 2024-07-17 Eunchul Kim , Daekyung Lee , Souichi Sakamoto , Ju-Yeon Jo , Mauricio Vargas , Akihito Ishizaki , Jun Minagawa , Heetae Kim

We describe some of the main external mechanisms that lead to a loss of antibunching, i.e., that spoil the character of a given quantum light to deliver its photons separated the ones from the others. Namely, we consider contamination by…

A model for the description of photonuclear reactions in the multi-GeV range is described that combines the coherent initial state interactions (shadowing) of the incoming photon with an incoherent coupled channel description of final state…

Nuclear Theory · Physics 2007-05-23 Ulrich Mosel