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Direct observation of electron self-trapping in crystals
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| Abstract |
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| Direct experimental evidence is reported for the self-trapping of electrons produced at 80 K by x-ray irradiation or by UV illumination above the band gap in pure, orthorhombic (D2h16) PbCl2 crystals. The ESR analysis demonstrates that the electron is trapped at a pair of nearest-neighbor substitutional Pb2+ ions along the a direction, resulting in a paramagnetic Pb-2(3+) molecular ion with electronic configuration complementary to that of the (halogen)2- self-trapped hole center in the alkali halides. The results of this paper suggest that the self-trapped exciton in PbCl2 consists of a hole trapped in an excited orbital around the Pb-2(3+) center. | |
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English
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| Source (journal) |
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Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015 |
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Lancaster, Pa : 1993
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1098-0121 [print]
1550-235X [online]
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| Volume/pages |
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48:13(1993), p. 9575-9580
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| ISI |
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A1993MC11600049
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| Full text (open access) |
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