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Infrared Absorption by Local Vibrational Modes of Boron Impurities in Germanium
Author(s) -
Nazarewicz W.,
Jurkowski J.
Publication year - 1969
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19690310128
Subject(s) - boron , germanium , impurity , silicon , absorption (acoustics) , lithium (medication) , infrared , infrared spectroscopy , chemistry , materials science , absorption spectroscopy , analytical chemistry (journal) , atomic physics , optics , physics , organic chemistry , medicine , composite material , endocrinology
Local modes of boron in germanium have been observed by infrared absorption measurements in the range from 480 to 630 cm −1 at 195 and 295°K. Lithium has been used as a compensating donor impurity. The absorption spectrum contains three pairs of bands which are attributed to local modes of boron on the basis of the isotopic shifts observed. One of these pairs is associated with unpaired (isolated) boron and two others with boron in paired configuration (with lithium), as was predicted theoretically. A comparison of our data with those already known for silicon is given.