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Thermoluminescence Mechanism In Li2B407:Cu

1996; Oxford University Press; Volume: 65; Issue: 1 Linguagem: Inglês

10.1093/oxfordjournals.rpd.a031687

1742-3406

Sho Watanabe, Eliane F. Chinaglia, Márcio Luis Ferreira Nascimento, Masaya Matsuoka,

Silicon and Solar Cell Technologies

Samples of Li2O.2B2O3 doped with CuO have been produced by melting appropriate mixtures of Li2CO3 and H3BO3 at 980 oC and then quenching to room temperature. Glasses thus obtained were devitrified. The absorption spectra of non-irradiated and irradiated samples indicate that ? radiation changes Cu2+ into Cu+. ESR spectra of Cu-doped lithium borate exhibits the typical BOHC centres, 'five-line-plus-a-shoulder' between the ±¹/2Mn-lines. It is proposed that by heating the Cu-doped lithium borate, BOHC has an important role in the TL emission process.