Karl Baedeker (scientist)
Karl Wilhelm Sali Baedeker (3 February 1877 – 6 August 1914) was a
One of his scientific discoveries was that the
He also observed a Hall effect in transparent copper iodide thin films that had the reverse sign to that in copper, an observation of what was later to be known as conduction by electron holes in semiconductors. This observation was critical in developing the theory of electron conduction in solids. Along with his graduate student Karl Steinberg, Baedeker studied the effect of varying concentration of iodine on the electrical properties of copper iodide.
He also is credited with making the first transparent conducting oxide (TCO) thin film, cadmium oxide (CdO), in 1907.[2] TCOs are now ubiquitous in optoelectronics and a multibillion-dollar industry.
Baedeker was
In 2014, a conference on transparent conducting oxides was held in Leipzig to commemorate the centenary of Baedeker's death. A paper on the life and work of Baedeker was published in the proceedings of the meeting.[4]
References
- ISBN 0262524244pp.274-276
- ^ K. Baedeker, Annalen der Physik (Leipzig) 327 (1907) 749.
- ^ Frederick Seitz and Norman G. Einspruch,Electronic Genie: The tangled history of silicon University of Illinois Press, Urbana and Chicago, USA, 1998. pp. 52-53
- ^ Marius Grundman, "Karl Baedeker (1877-1914) and the discovery of transparent conductive materials", Physica Status Solidi A 212(7), 1409-1426 (2015), doi: 10.1002/pssa.201431921.