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A Crash Course in Nanophotonic Simulations
18 Jun 2015 | | Contributor(s):: Peter Bermel
This seminar will cover rapid, scalable computational methods used in simulating optical reflection,transmission, and absorption in complex structures. After a brief survey of the tools available, the S4 simulation tool will be demonstrated in detail.
A Multi-Scale Modeling Approach to Study Transport in Silicon Heterojunction Solar Cells
03 Nov 2015 | | Contributor(s):: Pradyumna Muralidharan, Dragica Vasileska, Stephen M. Goodnick, Stuart Bowden
IWCE 2015 presentation. Abstract and more information to be added at a later date.
A Physical Model for Non-Ohmic Shunt Conduction and Metastability in Amorphous Silicon Solar Cells
16 Aug 2011 | | Contributor(s):: Sourabh Dongaonkar, Souvik Mahapatra, Karthik Yogendra, Muhammad Alam
In this talk we develop a coherent physics based understanding of the shunt leakage problem in a-Si:H cells, and discuss its implications on cell and module level.Sourabh Dongaonkar is with School of Electrical and Computer Engineering, Purdue University, West Lafayette, INKarthik Y and Souvik...
CdTe/CdS-BASED PHOTODIODE ARRAYS VIA SELECTIVE-AREA, CLOSE-SPACED SUBLIMATION
out of 5 stars
07 Dec 2006 | | Contributor(s):: Arev Gabriel Escobedo
In this talk, the deposition of dense arrays of CdTe/CdS photodiodes, via close-spaced sublimation, is presented for the first time. The previously reported ordered polycrystalline method was used to fabricate the photodiode arrays with the feature size ranging from 1 to 2 micrometers on a pitch...
Design of Optoelectronically-active Polymers for Organic Photovoltaic Applications
01 Feb 2013 | | Contributor(s):: Bryan W. Boudouris
Organic photovoltaic (OPV) devices are of great interest due to their promise of providing flexible, lightweight, and inexpensive alternatives to their currently-used inorganic counterparts. However, large-scale implementation of these modules has been hampered due to their relatively low power...
Diffusion-Reaction Modeling of Cu Migration in CdTe Solar Devices
26 Oct 2015 | | Contributor(s):: Da GUO, Tian Fang, Richard Akis, Dragica Vasileska
IWCE 2015 presentation. In this work, we report on development of one-dimensional (1D) finite-difference and two- dimensional (2D) finite-element diffusion-reaction simulators to investigate mechanisms behind Cu- related metastabilities observed in CdTe solar cells . The evolution of CdTe...
Economic Factors on the Modern Photovoltaic Market
14 Sep 2011 | | Contributor(s):: Gregory T. Forcherio
Photovoltaic research is heavily driven by market demand and "green-energy" hopes of the future. Commercial and utility level thin film photovoltaic systems have almost reached grid parity worldwide, but the residential market, mainly comprised of crystalline and polycrystalline...
Epitaxial Strategies for High Power Optically Pumped Vertical External Cavity Surface Emitting Lasers and Metamorphic Antimonide Solar Cells
02 Nov 2016 | | Contributor(s):: Ganesh Balakrishnan
We present antimonide-based photovoltaic cells grown on GaAs and Silicon substrates for use as sub-cells in metamorphic multi-junction solar cells. These antimonide cells, based on GaSb, are designed to absorb near-infrared photons. The GaSb layer is grown on either GaAs or Silicon substrates.
Failures in Photovoltaic Modules
16 Apr 2015 | | Contributor(s):: Peter Bermel
In this talk, I will discuss some of the major sources of performance degradation for common glass-encapsulated PV modules, including crystalline silicon and thin films. The greatest reliability challenges have occurred in the latter, with recent studies showing that thin-film modules operating...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 25: Nanomaterials and Devices for Solar Energy
29 Dec 2009 | | Contributor(s):: Nick Fang, Omar N Sobh
Nanomaterials and Devices for Solar EnergyTopics: Approaches: Breathing Membrane Continuous Operation Fuel Cell Water Management ElectroKinetic Nanobattery EDL Capacitators Laminar Flow Based Micro Fuel Cells The Energy in Sunlight Solar Energy Utilization Discovery of photovoltaic effect...
In Search of the Perfect Semiconductor Photon Detector
19 May 2008 | | Contributor(s):: Peter Y. Yu
Photon detectors have many important applications, such as in heat sensing, digital cameras, solar cells and x-ray and gamma-ray detection. So far, the most common detectors are based on elemental semiconductors , such as Si and Ge. However, they are by no means perfect in tackling some of the...
Lecture 6: 3D Nets in a 3D World: Bulk Heterostructure Solar Cells
27 Oct 2009 | | Contributor(s):: Muhammad A. Alam
Outline:Introduction: definitions and review
Reaction diffusion in fractal volumesCarrier transport in BH solar cellsAll phase transitions are not fractalConclusions
Modeling and Optimization of Polymer Based Bulk Heterojunction (BH) Solar Cell
15 Feb 2010 | | Contributor(s):: Biswajit ray
A polymer phase separation model based on Cahn-Hilliard equation and a three-dimensional (3D) coupled exciton/electron/hole transport model in the disordered, phase-segregated morphology so generated, allow us to predict, possibly for the first time, the morphology dependent performance limits...
Nano Carbon: From ballistic transistors to atomic drumheads
14 May 2008 | | Contributor(s):: Paul L. McEuen
Carbon takes many forms, from precious diamonds to lowly graphite. Surprisingly, it is the latter that is the most prized by nano physicists. Graphene, a single layer of graphite, can serve as an impenetrable membrane a single atom thick. Rolled up into a nanometer-diameter cylinder--a carbon...
Nano Solutions to Our Impending Energy Crisis
17 Nov 2012 | | Contributor(s):: Ali Shakouri
In this talk we review some of the advances in nanoscale energy conversion devices and discuss about the challenges and opportunities to provide a clean energy infrastructure. Couple of examples from solar and thermoelectric materials, devices and systems will be given and the scale of the...
NanoDays - Artificial Photosynthesis with Biomimetic Nanomaterials: Self-Repairing Solar Cells
05 May 2011 | | Contributor(s):: Jong Hyun Choi
Nanoscience at Work: Creating Energy from Sunlight
13 Jun 2007 | | Contributor(s):: A. Paul Alivisatos
Professor Paul Alivisatos introduces the Helios Project for the 2007 'Science at the Theater' series at Berkeley Repertory Theater in Berkeley, California. He discusses how Helios Project researchers use nanotechnology in the efficient capture of sunlight, and its conversion to electricity to...
Opportunities of Lasers for Scalable Manufacturing of Solar Energy Devices
21 Aug 2012 | | Contributor(s):: Gary Cheng
Production costs, module conversion efficiencies, and adoption in commercial rooftops continue to be the most critical issues for solar energy technology.The industry continuously seeks technologies that offer scalable and high speed solar device production to replace costly conventional...
Optimum Morphology and Performance Gains of Organic Solar Cells
20 Aug 2011 | | Contributor(s):: Biswajit ray, Muhammad Alam
Morphology of light absorbing layer is known to dictate the power conversion efficiency of organic photovoltaic (OPV) cell. The innovation of bulk heterojunction (BHJ) led to significant improvement for exciton harvesting, but carrier recombination at the distributed interfaces and variability...
OPV: Conjugated Polymer Design and Chemistry for Organic Photovoltaics
21 Jan 2011 | | Contributor(s):: Claire H Woo
This presentation was part of the "Organic Photovoltaics: Experiment and Theory" workshop at the 2010 Users' Meeting of the Molecular Foundry and the National Center for Electron Microscopy, both DOE-funded Research Centers at Lawrence Berkeley National Laboratory.