SCIENTIFIC ABSTRACT KUROVA, I. A. - KUROYEDOV, A. I.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000927730010-2
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 20, 2000
• Sequence Number: 10
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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ACC NRi AP6031432 SOURCE CODE: UR/0056/66/051/002/0401/0405
AUTHOR: Kuroval I. A.; Ormontp N. N.; Ostroborodova) V. V.
ORO: Moscow State UnIvers'Ay (Moskovokty goaudarotvennyy unl.vereltet)
TITLE: Impurity photoconductivity spectra or p-typs germanium with
Ga, Hg, Au, and Ni mpurities at low temperatures
7,7
SOURCE: Zh eksper I teor fiz, V. 51, no. 2, 1966p 401-405
TOPIC TAGS: Impurity conductivity, photoconductivity, germanium,
p, type germanium, recombination, impurity center, ion energy
ABSTRACT: The Impurity photocA"'ductivity soectra of p-type germanium
with partially compensated levels of Ga (0.01 ev), H9 (0.098 ev),
Au (0-15 ev), and Ni (0.2 ev) were Investigated at temperatures of
6-10K. Oscillations, I.e., a set of equidistant (0-037 ev) minimums,
are observed in the Ge with Ga spectra. The relative depth of the
minimums (K, %) depends on the lifetime of the holes To in the sample,
decreasing as the lifetime Increases. The dependence of K on the
field strength and temperature agrees qualitatively with the respectiv
dependence of -C . The depth of minimimu in the photoconductivity
spectra of Ge w?th Hg to much less than that of Ge with Ga at the same

L 02197-67
ACC NRs AP6031432
concentrations of recombination centers. No oscillations are observed
In Ge spectra with Au or Ni. The results obtained together with those
of a previous paper (B. A. Besfamil naya, I. A. Kurova, N. N. Ormont,
V. V. Ostroborodova, ZhETFj 48p 158~j 1965) indicate that for equal
lifetimes, the oscillation depth decreases with the growth of the
Ionization energy of the impurity centers. Some suggestions are made
regarding the possible causes of the effect. Orig. art. has: 5 fig-
ures and 1 table. (Based on authors' abstract] INTI
SUB CODE: 20/ SUBM DATE: 02Mar66/ ORIG REF: 007/ OTH REF: 01
Card

i I LQ L:'~~ UI-L?' ! "'L.- u1 -Yi, 'f:? __7Z I
A.; V~oana, M.; Vavilov, V. S.
O~W: M"cow St;itu Unlv,,raity im. M. V. Loi-iiorioz;ov (Xo.,;kov~-kiy gosudarstvennyy univer-
:jTT1::: Ob,-crv.atioa of the motion of elcc*~rical domains in n-type gc-.T.-,ani= with a
,partially cozpcii~;ated upper accoptor level of gold
:SOURCE: Fizika tvcrdogo tela, v. 8, no. 8, 10C6, 2374-2381
;TOPIC TAGS: oicetron capture, electron donor, temperature dependence, electric field 1
.~ABSTRACT : '.'he -motion and valocity of a strong electrical field (domain) was observed
lin sa-miplea olz i-,crinanliLm containing, Au and or'b in the range of zcn~eraturcs between 15
1and 350K. T.-~c electrical instabilit-I Is due to the dt,~pendence of electron capture in
!.the uppev zcceptor level of the gold (E 0.04 ev) on The magnitude of the electric
'o--mperature and backgro=6 increase, the domain accalerateo. In the
!region o--;: th--nnal generation of electrons in the j_~-.ple, velocity depends- exponential-
;1y on te.zpezazu:~c ;,ind the activation encz~-,y is cv. in the re-gion in whic"a elec-
jtrons exe c-1c.~.c-_,atcd primarily by the thermal baciground frcm the gold accep?ttor level,
~t-ne t'-1-.pcrz,-curc %-..cperd-,nco of the volocity Is exponential for all values of the bacJ