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Time-resolved photoluminescence of undoped InP (1994)

Keyes, B. M. ; Dunlavy, D. J. ; Ahrenkiel, R. K. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 75 (1994), S. 4249-4251

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: Energy and time-resolved photoluminescence data have been obtained for nominally undoped (n 4.5×1015 cm−3) bulk InP grown by the vertical-gradient freeze method. The data were taken as a function of temperature, from 80 to 290 K, and analyzed using a solution to the continuity equation. The resulting lifetime values range from 300 ns to 3.2 μs, and surface recombination velocities were fund to be on the order of 103 cm/s. The temperature dependence can be explained by assuming a radiatively limited recombination with a resulting B coefficient ≥5.9×10−11 cm3/s at 300 K.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.355962

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An X-ray camera for single-crystal studies at high temperatures under controlled atmosphere (1982)

Aldhart, W. ; Tzafaras, N. ; Sueno, S. ; [et al.]

Copenhagen : International Union of Crystallography (IUCr)

Applied crystallography online 15 (1982), S. 236-240

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ISSN: 1600-5767

Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Topics: Geosciences , Physics

Notes: A vacuum heating camera has been developed for extremely low background X-ray film work between room temperature and 2000 K. It can be used with modified conventional Weissenberg goniometers and with a specially designed focusing goniometer. The temperature control is maintained by a Pt/Pt–10% Rh thermocouple, a three-term proportional, integral and derivative (PID) controller and a programmable power supply. The accuracy in the absolute temperature setting is 10 K, the stability better than 1 K and the maximum thermal gradient over the crystal 7 K mm−1 at 1330 K. A small oxygen pressure can be applied, depending on the temperature, to control oxidation or reduction reactions of the sample.