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Solar modules are currently characterized at standard test conditions (STC), defined at 1000W/m2 and 25 {\deg}C. However, solar modules in actual outdoor operating conditions typically operate at lower illumination and higher temperature…

Applied Physics · Physics 2021-07-02 Jean Cattin , Olivier Dupré , Brahim Aïssa , Jan Haschke , Christophe Ballif , Mathieu Boccard

A potent class of generative models known as Diffusion Probabilistic Models (DPMs) has become prominent. A forward diffusion process adds gradually noise to data, while a model learns to gradually denoise. Sampling from pre-trained DPMs is…

Machine Learning · Computer Science 2023-10-27 Martin Gonzalez , Nelson Fernandez , Thuy Tran , Elies Gherbi , Hatem Hajri , Nader Masmoudi

This paper presents an investigation of organic LED extraction efficiency enhancement using a low refractive index scattering layer. A scattering model is developed based on rigorous electromagnetic modelling techniques. The model accounts…

Optics · Physics 2007-05-23 R. F. Oulton , C. S. Adjiman , K. Handa , S. Aramaki

This paper presents and evaluates the performance of an optimal scheduling algorithm that selects the on/off combinations and timing of a finite set of dynamic electric loads on the basis of short term predictions of the power delivery from…

Systems and Control · Computer Science 2016-07-27 Abdulelah H Habib , Zachary K Pecena , Vahid R Disfani , Jan Kleissl , Raymond A. de Callafon

The effective mass of charge carriers is a fundamental descriptor of the electronic structure of materials, and can be used to assess performance in electronics applications, or to screen for thermoelectrics and transparent conductors.…

Materials Science · Physics 2025-12-02 Szymon Błazucki , Junfeng Qiao , Nicola Marzari

Two critical limitations of organic-inorganic lead halide perovskite materials for solar cells are their poor stability in humid environments and inclusion of toxic lead. In this study, high-throughput density functional theory (DFT)…

Materials Science · Physics 2019-04-12 Ryan Jacobs , Guangfu Luo , Dane Morgan

Hybrid conjugated polymer/fullerene filaments based on MEH-PPV/PVP/PCBM are prepared by electrospinning, and their properties assessed by scanning electron, atomic and lateral force, tunnelling, and confocal microscopy, as well as by…

Photovoltaic cells are electronic devices that convert light energy to electricity, forming the backbone of solar energy harvesting systems. An essential step in the manufacturing process for photovoltaic cells is visual quality inspection…

Image and Video Processing · Electrical Eng. & Systems 2022-04-26 Carol Xu , Mahmoud Famouri , Gautam Bathla , Saeejith Nair , Mohammad Javad Shafiee , Alexander Wong

Solar energy is the most convenient and reliable energy source among all renewable energy resources and an efficient photovoltaic device is required to convert this energy into utilizable energy. Different types of solar cells (SC) are…

Applied Physics · Physics 2019-08-02 Ali Imran , Deborah Eric , Muhammad Noaman Zahid , Muhammad Yousaf

Transient photovoltage (TPV) is a technique frequently used to determine charge carrier lifetimes in thin-film solar cells such as organic, dye sensitized and perovskite solar cells. As this lifetime is often incident light intensity…

Applied Physics · Physics 2019-08-06 Oskar J. Sandberg , Kristofer Tvingstedt , Paul Meredith , Ardalan Armin

Charge transfer in polymer devices represents a crucial, though highly inaccessible stage of photocurrent generation. In this article we propose studying the properties and behaviour of organic solar cells through the modification of…

Applied Physics · Physics 2018-09-27 S. Oviedo-Casado , A. Urbina , J. Prior

In this paper a model is developed to solve the on/off scheduling of (non-linear) dynamic electric loads based on predictions of the power delivery of a (standalone) solar power source. Knowledge of variations in the solar power output is…

Optimization and Control · Mathematics 2016-03-29 Abdulelah H. Habib , Jan Kleissl , Raymond A. de Callafon

Current methods for evaluating solar cell efficiencies cannot be applied to extremely thin cells where phenomena from the realm of near field optics prevail. We overcome this problem by offering a rigorous electromagnetic calculation of…

Materials Science · Physics 2011-06-09 A. Niv , M. Gharghi , Z. R. Abrams , C. Gladden , X. Zhang

Among the parameters determining the efficiency of an organic solar cell, the open-circuit voltage ($V_\text{OC}$) is the one with most room for improvement. Existing models for the description of $V_\text{OC}$ assume that photogenerated…

Applied Physics · Physics 2021-10-07 Tanvi Upreti , Sebastian Wilken , Huotian Zhang , Martijn Kemerink

A quite general device analysis method that allows the direct evaluation of optical and recombination losses in crystalline silicon (c-Si)-based solar cells has been developed. By applying this technique, the optical and physical limiting…

Applied Physics · Physics 2017-12-06 Akihiro Nakane , Shohei Fujimoto , Hiroyuki Fujiwara

Understanding the relationship between the structure of light-harvesting systems and their excitation energy transfer properties is of fundamental importance in many applications including the development of next generation photovoltaics.…

Chemical Physics · Physics 2017-07-21 Florian Häse , Christoph Kreisbeck , Alán Aspuru-Guzik

Solar modules in utility-scale systems are expected to maintain decades of lifetime to rival conventional energy sources. However, cyclic thermomechanical loading often degrades their long-term performance, highlighting the importance of…

Applied Physics · Physics 2024-05-14 Xin Chen , Todd Karin , Anubhav Jain

Non-fullerene acceptors (NFA) have delivered advance in bulk heterojunction organic solar cell efficiencies, with the significant milestone of 20% now in sight. However, these materials challenge the accepted wisdom of how organic solar…

Object Detection on the mobile system is a challenge in terms of everything. Nowadays, many object detection models have been designed, and most of them concentrate on precision. However, the computation burden of those models on mobile…

Computer Vision and Pattern Recognition · Computer Science 2021-10-25 Yihao Wang , Ling Gao , Jie Ren , Rui Cao , Hai Wang , Jie Zheng , Quanli Gao

Strongly interacting electrons in solids are generically described by Hubbardtype models, and the impact of solar light can be modeled by an additional time-dependence. This yields a finite dimensional system of ordinary differential…