Solar ♦ news digest


past recipient of this award, and a member of the Böer family.


Contributions of Alferov and Andreev


The scientific activity of Alferov and Andreev has been focused for more than 40 years on research and development of III-V semiconductor heterostructures - combining group III elements such as aluminium, gallium and indium with group V elements such as nitrogen, phosphorus and arsenic specifically to improve solar cells.


In the late 1960s and early 1970s, they carried out multifaceted investigations in the field of semiconductor device technology and physics, based on heterojunctions, or semiconductor interfaces.


They developed what are considered the ideal aluminium gallium arsenide/gallium arsenide (AlGaAs/GaAs) lattice matched heterojunctions, allowing for the proposal and realisation of a number of semiconductor devices, including:


High-voltage and high-temperature rectifiers for power electronics;


Heterolasers;


Powerful light-emitting diodes in the visible and infrared spectrum regions;


Radiation detectors; Solar cells for space and terrestrial application.


While the majority of solar cells are made from silicon, Alferov and Andreev were ahead of their time in working with the III-V semiconductor compounds, which demonstrated greater performance and opened the door to increased efficiency in solar cells and arrays.


The improvements were put into practice in the 1970s as the new solar cells were used to equip the Soviet Mir space station.


Subsequent years saw further modifications of the solar cells, with the researchers improving the radiation tolerance and increasing the lifetime of space solar cells almost two times over.


Their developments in solar energy systems resulted in wide international cooperation with organisations including the Instituto de Energia Solar in Madrid, the Fraunhofer Institute for Solar Energy Systems in Freiburg, NASA’s Glenn Research Center and the Toyota Technological Institute.


October 2013 www.compoundsemiconductor.net 109


2007, Lawrence L. Kazmerski, executive director, Science and Technology Partnerships, National Renewable Energy Laboratory and a pioneer and leader in the field of solar electricity;


2009, Hermann Scheer, a member of German Parliament, president of EUROSOLAR and chairperson of the World Council for Renewable Energy, who has made an outstanding contribution to the worldwide understanding of the necessity to replace fossil and nuclear resources by renewable energies, especially solar energy; and


2011, Richard M. Swanson, president and chief technical officer at SunPower Corp., San Jose, California, for the invention of the point contact solar cell, and further innovations that make solar energy ever more efficient and cost effective.


2005, Yoshihiro Hamakawa, adviser professor to the chancellor at Ritsumeikan University in Shiga, Japan and a prominent scholar in the field of solar photovoltaic energy;


Previous recipients


The first Karl W Böer Solar Energy Medal of Merit Award was presented in 1993 to former President Jimmy Carter, who was cited as an individual who spurred development and focused world attention on solar energy.


Other recipients of the Böer Medal include: 1995, David E. Carlson, chief scientist, BP Solar;


1997, Adolf Goetzberger, founder of the Fraunhofer Institute for Solar Energy Systems;


1999, Stanford R. Ovshinsky, a pioneer in the science of amorphous semiconductors resulting in the development of low-cost, thin film silicon solar cells;


2001, Allen M. Barnett, a pioneer in high-performance, thin-crystalline silicon solar cells and currently professor in UD’s Department of Electrical and Computer Engineering;


2003, Martin A. Green, Inaugural Scientia Professor at the Centre for Photovoltaic Engineering in Sydney, Australia, and foundation director for the Centre for Third Generation University of New South Wales in Sydney;


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