Prof. Alexandre Freundlich Profile

Prof. Alexandre Freundlich

at Univ of Houston

SPIE Involvement:

Conference Chair | Editor | Author

Publications (24)

Proceedings Article | 5 March 2021 Presentation

Welcome and Introduction to SPIE Conference 11681

Alexandre Freundlich, Stéphane Collin, Karin Hinzer

Proceedings Volume 11681, 1168102 (2021) https://doi.org/10.1117/12.2592134

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Proceedings Article | 27 February 2019 Paper

III-V dilute nitride quantum-engineered solar cell for lattice-matched silicon-based tandems

Khim Kharel, Alexandre Freundlich

Proceedings Volume 10913, 1091314 (2019) https://doi.org/10.1117/12.2510813

KEYWORDS: Solar cells, Silicon, Quantum wells, Silicon solar cells, Absorption, Internal quantum efficiency, Quantum efficiency, External quantum efficiency, Nitrogen, Instrument modeling

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Proceedings Article | 27 February 2019 Paper

Unusual hot carrier effect and improved carrier extraction observed in asymmetric dilute-nitride quantum-engineered solar cells through photoluminescence (PL) and external quantum efficiency (EQE) measurements

Khim Kharel, Alexandre Freundlich

Proceedings Volume 10913, 109130H (2019) https://doi.org/10.1117/12.2510819

KEYWORDS: Solar cells, Temperature metrology, Quantum wells, Gallium arsenide, External quantum efficiency, Luminescence, Solar energy, Nitrogen, Sun, Diffusion

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Proceedings Article | 16 February 2018 Paper

Investigation of carrier escape and recombination dynamics in GaAsN/GaAs superlattice and resonantly coupled quantum well solar cells

Khim Kharel, Alexandre Freundlich

Proceedings Volume 10527, 1052714 (2018) https://doi.org/10.1117/12.2290935

KEYWORDS: Solar cells, Gallium arsenide, Temperature metrology, Quantum wells, Sun, Nitrogen, Modulation, Solar energy, Plasma, Superlattices

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Proceedings Article | 16 February 2018 Presentation + Paper

Design of wide bandgap (1.7 eV-1.9 eV) III-V dilute nitride quantum-engineered solar cells for tandem application with silicon

Khim Kharel, Alexandre Freundlich

Proceedings Volume 10527, 105270C (2018) https://doi.org/10.1117/12.2290053

KEYWORDS: Silicon, Solar cells, Absorption, Quantum wells, Nitrogen, Superlattices, Semiconductors, Gallium arsenide, Tandem solar cells, Gallium

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Proceedings Article | 19 April 2017 Presentation

Symmetric and asymmetric (Ga,In)(P,As,N) quantum well and superlattice solar cells for lattice matched III-V/Si tandems (Conference Presentation)

Alexandre Freundlich, Khim Kharel

Proceedings Volume 10099, 1009905 (2017) https://doi.org/10.1117/12.2257643

KEYWORDS: Physics, Current controlled current source, Quantum wells, Solar cells, Superlattices, Silicon, Photovoltaics, Quantum efficiency

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Proceedings Article | 23 February 2017 Presentation + Paper

(110) cubic and (100) rhombohedral Ge crystal formation on glass using Al-induced crystallization

Kaveh Shervin, Khim Kharel, Alexandre Freundlich

Proceedings Volume 10099, 100990D (2017) https://doi.org/10.1117/12.2253088

KEYWORDS: Germanium, Crystals, Aluminum, Solar cells, Thin films, Gallium arsenide, Annealing, Silicon, Chemical species, Etching

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Proceedings Article | 14 March 2016 Paper

Rapid 2D incoherent mirror fabrication by laser interference lithography and wet etching for III-V MQW solar cells

Wei Wang, Alex Freundlich

Proceedings Volume 9743, 97430J (2016) https://doi.org/10.1117/12.2212956

KEYWORDS: Mirrors, Solar cells, Reflectors, Absorption, Lithography, Wet etching, Reflection, Quantum wells, Antireflective coatings, Laser development, Photoresist materials, Etching, Semiconducting wafers

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Proceedings Article | 16 March 2015 Paper

Design and development of back reflectors for improved light coupling and absorption enhancement in thin MQW solar cells

Wei Wang, Alex Freundlich

Proceedings Volume 9358, 93580C (2015) https://doi.org/10.1117/12.2078669

KEYWORDS: Mirrors, Photoresist materials, Absorption, Etching, Reflectors, Solar cells, Lithography, Antireflective coatings, Photomasks, Reflection

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Proceedings Article | 7 March 2014 Paper

Detailed physics based modeling of triple-junction InGaP/GaAs/Ge solar cell

Alexandre Fedoseyev, Timothy Bald, Ashok Raman, Seth Hubbard, David Forbes, Alexandre Freundlich

Proceedings Volume 8981, 898119 (2014) https://doi.org/10.1117/12.2040743

KEYWORDS: Solar cells, 3D modeling, External quantum efficiency, Photovoltaics, Instrument modeling, Gallium arsenide, Data modeling, Indium gallium phosphide, TCAD, Germanium

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Proceedings Article | 7 March 2014 Paper

Design of sub-wavelength dielectric antireflective grading for multijunction concentrator photovolatics

Wei Wang, Alex Freundlich

Proceedings Volume 8981, 89810Y (2014) https://doi.org/10.1117/12.2040431

KEYWORDS: Glasses, Dielectrics, Solar concentrators, Photons, Solar cells, Refractive index, Antireflective coatings, Autoregressive models, Thin films, Titanium dioxide

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Proceedings Article | 29 March 2013 Paper

Unveiling structural properties of self-assembled quantum dots

M. Gunasekera, C. Rajapaksha, A. Freundlich

Proceedings Volume 8634, 86340R (2013) https://doi.org/10.1117/12.2005283

KEYWORDS: Quantum dots, Indium arsenide, Diffraction, Gallium arsenide, Scattering, Scanning tunneling microscopy, Quantitative analysis, Shape analysis, Oxides, Kinematics

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Proceedings Article | 25 March 2013 Paper

Modification of MBE for growth of dilute nitride quantum well photovoltaics

G. Vijaya, A. Mehrotra, M. Gunasekera, A. Freundlich

Proceedings Volume 8620, 86201R (2013) https://doi.org/10.1117/12.2002636

KEYWORDS: Plasma, Quantum wells, Solar cells, Camera shutters, Nitrogen, Interfaces, Gallium arsenide, Photovoltaics, Sun, Solar energy

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Proceedings Article | 25 March 2013 Paper

Modeling of dilute nitride cascaded quantum well solar cells for high efficiency photovoltaics

G. Vijaya, A. Alemu, A. Freundlich

Proceedings Volume 8620, 86201D (2013) https://doi.org/10.1117/12.2002621

KEYWORDS: Quantum wells, Quantum efficiency, Solar cells, Sun, Absorption, Solar energy, Photovoltaics, Data modeling, Picosecond phenomena, Photons

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Proceedings Article | 25 March 2013 Paper

Modeling of defect tolerance of IMM multijunction photovoltaics for space application

Akhil Mehrotra, Alex Freundlich

Proceedings Volume 8620, 86200V (2013) https://doi.org/10.1117/12.2004600

KEYWORDS: Solar cells, Indium gallium arsenide, Gallium arsenide, Indium gallium phosphide, Gold, Solar radiation, Diffusion, Tolerancing, Photovoltaics, Doping

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Proceedings Article | 20 February 2013 Paper

Simulation and development of sub-wavelength textured ARCs for CPV applications

Wei Wang, Paul Narchi, Alex Freundlich

Proceedings Volume 8620, 86200P (2013) https://doi.org/10.1117/12.2004612

KEYWORDS: Photons, Solar cells, Refractive index, Antireflective coatings, Dielectrics, Solar concentrators, Zinc, Photovoltaics, Thin films, Optical design

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Proceedings Article | 21 February 2012 Paper

Modeling of defect-tolerant thin multi-junction solar cells for space application

A. Mehrotra, A. Alemu, A. Freundlich

Proceedings Volume 8256, 82561H (2012) https://doi.org/10.1117/12.909203

KEYWORDS: Solar cells, Gallium arsenide, Indium gallium phosphide, Diffusion, Solar radiation, Multijunction solar cells, Doping, Photons, Ions, Solar radiation models

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Proceedings Article | 21 February 2012 Paper

Minimizing solar cell reflection loss through surface texturing and implementation of 1D and 2D subwavelength dielectric gratings

W. Wang, A. Mehrotra, A. Alemu, A. Freundlich

Proceedings Volume 8256, 82561A (2012) https://doi.org/10.1117/12.911826

KEYWORDS: Reflectivity, Reflection, Zinc, Solar cells, Refractive index, Dielectrics, Binary data, Antireflective coatings, Autoregressive models, Silicon

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Proceedings Article | 21 February 2012 Paper

Improving photo-generated carrier escape in quantum well solar cells

A. Alemu, A. Freundlich

Proceedings Volume 8256, 82560B (2012) https://doi.org/10.1117/12.908305

KEYWORDS: Solar cells, Quantum wells, Gallium arsenide, Solar energy, Quantum efficiency, Photovoltaics, Picosecond phenomena, Nanostructures, Absorption, Electron transport

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Proceedings Article | 1 March 2011 Paper

Real-time metrology of self assembled quantum dots by reflection high energy electron diffraction

Alexandre Freundlich, Chandani Rajapaksha

Proceedings Volume 7947, 79470P (2011) https://doi.org/10.1117/12.875811

KEYWORDS: Quantum dots, Indium arsenide, Diffraction, Gallium arsenide, Atomic force microscopy, Metrology, Scattering, Chemical species, Reflection, Kinematics

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Proceedings Article | 21 February 2011 Paper

Dilute nitride multi-quantum well multi-junction design: a route to ultra-efficient photovoltaic devices

Gopi Krishna Vijaya, Andenet Alemu, Alex Freundlich

Proceedings Volume 7933, 79330G (2011) https://doi.org/10.1117/12.875239

KEYWORDS: Absorption, Quantum wells, Solar cells, Gallium arsenide, Nitrogen, Electrons, Quantum efficiency, Photovoltaics, Solar energy, Germanium

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Proceedings Article | 21 February 2011 Paper

Modeling and optimal designs for dislocation and radiation tolerant single and multijunction solar cells

A. Mehrotra, A. Alemu, A. Freundlich

Proceedings Volume 7933, 79332G (2011) https://doi.org/10.1117/12.875955

KEYWORDS: Solar cells, Gallium arsenide, Diffusion, Doping, Solar radiation, Multijunction solar cells, Crystals, Solar radiation models, Radiation effects, Absorption

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Proceedings Article | 21 February 2011 Paper

Resonant thermo-tunneling design for ultra-efficient nanostructured solar cells

A. Alemu, A. Freundlich

Proceedings Volume 7933, 79330S (2011) https://doi.org/10.1117/12.875252

KEYWORDS: Solar cells, Quantum wells, Solar energy, Electrons, Nanostructuring, Gallium arsenide, Photovoltaics, Nanostructures, Group III-V semiconductors, Sun

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Proceedings Article | 24 February 2009 Paper

Dilute nitride-based III-V heterostructures for unhindered carrier transport in quantum-confined p-i-n solar cells

A. Alemu, A. Freundlich

Proceedings Volume 7211, 72110M (2009) https://doi.org/10.1117/12.808335

KEYWORDS: Gallium arsenide, Solar cells, Photovoltaics, Absorption, Solar energy, Nanostructuring, Heterojunctions, Superlattices, Electron transport, Photons

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Showing 5 of 24 publications

Proceedings Volume Editor (14)

SPIE Conference Volume | 29 March 2024

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XIII

SPIE Conference Volume | 18 April 2023

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XII

SPIE Conference Volume | 6 April 2022

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XI

SPIE Conference Volume | 20 April 2021

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices X

SPIE Conference Volume | 1 April 2020

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX

Showing 5 of 14 publications

Conference Committee Involvement (29)

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XIV

28 January 2025 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XIII

29 January 2024 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXXI

31 January 2023 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XII

30 January 2023 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XI

26 January 2022 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXX

24 January 2022 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices X

6 March 2021 | Online Only, California, United States

Physics and Simulation of Optoelectronic Devices XXIX

6 March 2021 | Online Only, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX

4 February 2020 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXVIII

3 February 2020 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VIII

5 February 2019 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXVII

5 February 2019 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VII

31 January 2018 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXVI

29 January 2018 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXV

30 January 2017 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VI

30 January 2017 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXIV

15 February 2016 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V

15 February 2016 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IV

10 February 2015 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXIII

9 February 2015 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXII

3 February 2014 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices III

3 February 2014 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XXI

4 February 2013 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices II

3 February 2013 | San Francisco, California, United States

Physics, Simulation, and Photonic Engineering of Photovoltaic Devices

23 January 2012 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XX

23 January 2012 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XIX

24 January 2011 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XVIII

25 January 2010 | San Francisco, California, United States

Physics and Simulation of Optoelectronic Devices XVII

26 January 2009 | San Jose, California, United States

Showing 5 of 29 Conference Committees

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