By Gerhard P. Willeke, Eicke R. Weber
Semiconductors and Semimetals has distinct itself throughout the cautious choice of recognized authors, editors, and participants. initially widely recognized because the ''Willardson and Beer'' sequence, it has succeeded in publishing various landmark volumes and chapters. The sequence publishes well timed, hugely proper volumes meant for long term influence and reflecting the actually interdisciplinary nature of the sector. The volumes in Semiconductors and Semimetals were and should stay of significant curiosity to physicists, chemists, fabrics scientists, and equipment engineers in academia, clinical laboratories and sleek undefined. This quantity is the second of a suite of seven with regards to photovoltaics.
Written and edited via the world over popular experts
Relevant to a large readership: physicists, chemists, fabrics scientists, and machine engineers in academia, clinical laboratories and smooth
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Additional resources for Advances in Photovoltaics: Part 2
In Fig. , 2006b), the result is shown as log(I) over 1/T1/4. It is visible that, in a wide temperature range from À50 to þ100 C, log(I) is proportional to 1/ T1/4. This special temperature dependence is typical for variable range hopping conduction in a constant density of states near the Fermi level according to Mott’s theory (1990). This type of conduction has been observed regularly for highly disturbed semiconductors and insulators, like nano- and microcrystalline silicon layers (Myong and Lim, 2006).
19 (A) Microscopic ReBEL image and (B) surface topography (reflected light) image of a particle at the surface causing type-1 breakdown. (C) SEM (SE) image of this particle, (D) EDX mapping of the Al line. After Breitenstein et al. (2011b). 52 Otwin Breitenstein Depending on the geometry of the shunt, which decisively governs the series resistance to it, and the shape of the current flow, an ohmic point shunt may or may not lead to sufficiently high local electric fields necessary for generating light emission.
Here a solar cell was successively divided into smaller pieces by diamond scratching the backside and breaking, leading to cells with various areas differing by a factor of two. 5 shows the main result of Breitenstein and Heydenreich (1994). Here several I–V characteristics are plotted as current densities. If the current would flow homogeneously, these characteristics should be independent of the cell area. In reality, the small cell (B) shows a much higher mean current density than the large cell (A).
Advances in Photovoltaics: Part 2 by Gerhard P. Willeke, Eicke R. Weber