Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/14312
Title: | Carrier recombination and diffusivity in microcrystalline CVD-grown and single-crystalline HPHT diamonds | Authors: | Scajev, P. Gudelis, V. Jarasiunas, K. Kisialiou, I. Ivakin, E. NESLADEK, Milos HAENEN, Ken |
Issue Date: | 2012 | Publisher: | WILEY-V C H VERLAG GMBH | Source: | PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 209 (9), p. 1744-1749 | Abstract: | We report investigation of carrier recombination and diffusivity in bulk diamonds of different crystalline structure microcrystalline (MC) CVD-grown and single crystalline HPHT diamonds. Presence of neutral and positively charged nitrogen and hydrogen defects was determined from NIR and UVIR absorption spectra. Carrier injection into 1-mm thick bulk layers was realized by two-photon absorption at 351?nm wavelength. Carrier lifetimes of 150-330?ns in IIa type HPHT crystals correlated with N density, while the lifetimes in CVD crystal exhibited very fast (80?ps), slower one (38?ns), and mu s-duration thermally-activated (similar to 1.5?eV) decay components. The initial two components correlated with the grain size at the front and backsides of the MC diamond. Linearly increasing with injection carrier recombination rates were observed in both CVD and HPHT samples at 800?K, and fitted with effective recombination coefficient B?=?34 x 10-9?cm3/s. Ambipolar mobility and thermal diffusivity parameters in CVD and HPHT bulk crystals were measured by light-induced free carrier and thermal grating techniques. | Notes: | [Scajev, P.; Gudelis, V.; Jarasiunas, K.] Vilnius State Univ, Inst Appl Res, LT-10222 Vilnius, Lithuania. [Kisialiou, I.; Ivakin, E.] Acad Sci Belarus, Inst Phys, Minsk 220072, Byelarus. [Nesladek, M.; Haenen, K.] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. [Nesladek, M.; Haenen, K.] IMEC VZW, IMOMEC, B-3590 Diepenbeek, Belgium. patrik.scajev@ff.vu.lt | Keywords: | Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter; carrier diffusion; free-carrier absorption; light-induced transient gratings; recombination;carrier diffusion; diamond; free-carrier absorption; light-induced transient gratings; recombination | Document URI: | http://hdl.handle.net/1942/14312 | ISSN: | 1862-6300 | e-ISSN: | 1862-6319 | DOI: | 10.1002/pssa.201200052 | ISI #: | 000308942100019 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2013 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
scajev 1.pdf Restricted Access | Published version | 418.92 kB | Adobe PDF | View/Open Request a copy |
SCOPUSTM
Citations
19
checked on Sep 2, 2020
WEB OF SCIENCETM
Citations
19
checked on Oct 14, 2024
Page view(s)
106
checked on Sep 7, 2022
Download(s)
76
checked on Sep 7, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.