Titlebook: Boron; Volume 2: Preparatio Gerhart K. Gaulé Book 1965 Springer Science+Business Media New York 1965 chemistry.inorganic chemistry.preparat

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Trap-Dominated Electrical and Optical Effects in Crystalline Borontion in the near infrared after illumination with visible light. Since boron is opaque for wavelengths shorter than 0.8 . , the photoexcitation must occur in a thin surface layer of the crystal. Typical experiments are performed in three phases, namely, (1) photoexcitation, (2) observation of fast a

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萬花筒

https://doi.org/10.1007/978-3-662-12389-8 (silicon, copper, gold, tungsten, and magnesium). Carbon and silicon, in contrast to germanium, cause electron paramagnetic resonance with a . value about 2. 003. A similar resonance is found in B.C.; in both cases, it is probably related to unsaturated bonds of a radical type induced by the foreign atoms.

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Electron Paramagnetic Resonance, Electrical Conductivity, and Impurity Diffusion in Doped Boron (silicon, copper, gold, tungsten, and magnesium). Carbon and silicon, in contrast to germanium, cause electron paramagnetic resonance with a . value about 2. 003. A similar resonance is found in B.C.; in both cases, it is probably related to unsaturated bonds of a radical type induced by the foreign atoms.

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Prozesse als Abl?ufe verteilter Systeme The main impurity in our boron is carbon (30–50 ppm). Because of the unfavorable distribution coefficient for carbon in boron (approx. 4), removal by zone-refining is very time-consuming. A coulometric, method to determine carbon in boron is discussed.