Dr. Peter Peumans
at Stanford Univ
SPIE Involvement:
Conference Program Committee | Author | Instructor
Publications (5)

PROCEEDINGS ARTICLE | May 18, 2010
Proc. SPIE. 7725, Photonics for Solar Energy Systems III
KEYWORDS: Thin films, Polarization, Solar cells, Crystals, Silicon, Diffusion, Photonic crystals, Silicon films, Solids, Absorption

PROCEEDINGS ARTICLE | August 28, 2009
Proc. SPIE. 7416, Organic Photovoltaics X
KEYWORDS: Organic photovoltaics, Electrodes, Polymers, Metals, Glasses, Solar cells, Silver, Scanning electron microscopy, Heterojunctions, Nanowires

PROCEEDINGS ARTICLE | August 21, 2009
Proc. SPIE. 7410, Optical Modeling and Measurements for Solar Energy Systems III
KEYWORDS: Multilayers, Solar energy, Metals, Dielectrics, Black bodies, Energy conversion efficiency, Molybdenum, Solar radiation, Solar thermal energy, Absorption

PROCEEDINGS ARTICLE | February 18, 2009
Proc. SPIE. 7163, Ophthalmic Technologies XIX
KEYWORDS: Photovoltaics, Tissues, Electrodes, Video, Photodiodes, Platinum, Diodes, Video processing, Iridium, Information visualization

PROCEEDINGS ARTICLE | April 11, 2006
Proc. SPIE. 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
KEYWORDS: Sensors, Etching, Silicon, Sensor networks, Transducers, Signal processing, Structural health monitoring, Deep reactive ion etching, Reactive ion etching, Semiconducting wafers

Conference Committee Involvement (3)
Organic Photovoltaics X
3 August 2009 | San Diego, California, United States
Organic Photovoltaics IX
12 August 2008 | San Diego, California, United States
Organic Photovoltaics VIII
28 August 2007 | San Diego, California, United States
Course Instructor
SC797: The Science and Technology of Organic Solar Cells
Solar cells made from organic semiconductors are very attractive because they can potentially be made at very low cost in roll-to-roll coating machines. This tutorial will start with an introduction to organic semiconductors that will explain why conjugated molecules can be semiconductors, what determines their absorption spectrum, how molecular packing affects the charge carrier mobility and how they are used to make transistors, light-emitting diodes and solar cells. Then the various designs that have been used to make organic solar cells- single semiconductor, planar heterojunctions, bulk heterojunctions and tandems- will be covered. All of the important processes that occur in the cells will be addressed, including: • optical interference and light absorption • exciton diffusion and energy transfer • forward and back electron transfer (exciton splitting and recombination) • charge transport Device modeling and prospects for raising the efficiency from the current level of 5 % to 20 % will be discussed.
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