Multi-band structure of amorphous carbon luminescence

被引：16

作者：

Koós, M ^{[1
]}

Füle, M ^{[1
]}

Veres, M ^{[1
]}

Tóth, S ^{[1
]}

Pócsik, I ^{[1
]}

机构：

[1] Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary

来源：

关键词：

amorphous hydrogenated carbon; photoluminescence; band structure; UV range;

D O I：

10.1016/S0925-9635(01)00713-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structured photoluminescence (PL) spectra of hydrogenated amorphous carbon (a-C:H) layers prepared from benzene are presented. The spectra contain bands with peak positions in the range of 4.34-4.50, 3.93-4.01 and 3.64-3.79 eV in the ultraviolet region, and additional luminescence bands are in the energy regions of 3.19-3.28 and 2.85-2.96 eV, besides the previously mostly measured band, with a peak in the 2.28-2.48 eV photon energy range. Relative efficiency of these bands depends on the deposition conditions. Each of the new bands could be excited above a given photon energy and, therefore, the overall spectral shape as well as the structured feature of a-C:H luminescence varies with excitation energy. It is supposed that the opening of new radiation recombination transitions with increasing excitation energy explains the appearance of new luminescence bands. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：1115 / 1118

页数：4

共 11 条

[1] Photoluminescence of polymer-like amorphous carbon films grown in different plasma reactors [J].

Bouree, JE ;

Heitz, T ;

Godet, C ;

Drevillon, B ;

Conde, JP ;

Chu, V ;

Berberan-Santos, MN ;

Fedorov, A .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1998, 227 :574-578

[2] RADIATIVE RECOMBINATION IN A-SI1-XCX-H FILMS [J].

CHERNYSHOV, SV ;

TERUKOV, EI ;

VASSILYEV, VA ;

VOLKOV, AS .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1991, 134 (03) :218-225

[3] STRUCTURAL-PROPERTIES OF AMORPHOUS HYDROGENATED CARBON .4. A MOLECULAR-DYNAMICS INVESTIGATION AND COMPARISON TO EXPERIMENTS [J].

JUNGNICKEL, G ;

FRAUENHEIM, T ;

POREZAG, D ;

BLAUDECK, P ;

STEPHAN, U .

PHYSICAL REVIEW B, 1994, 50 (10) :6709-6716

[4] Amorphous carbon luminescence; excitation and emission in a broad energy range [J].

Koos, M ;

Pocsik, I ;

Erostyak, J ;

Buzadi, A .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1998, 227 :579-582

[5] Ultraviolet photoluminescence and its relation to atomic bonding properties of hydrogenated amorphous carbon [J].

Koós, M ;

Veres, M ;

Füle, M ;

Pócsik, I .

[6] Tight-binding approach to time-dependent density-functional response theory [J].

Niehaus, TA ;

Suhai, S ;

Della Sala, F ;

Lugli, P ;

Elstner, M ;

Seifert, G ;

Frauenheim, T .

PHYSICAL REVIEW B, 2001, 63 (08)

[7] Consequences of size-effect and spectral inhomogenity on Raman and photoluminescence spectra of a-C:H [J].

Pócsik, I ;

Koós, M .

[8] Photoluminescence behavior of hydrogenated amorphous carbon [J].

Rusli ;

Robertson, J ;

Amaratunga, GAJ .

JOURNAL OF APPLIED PHYSICS, 1996, 80 (05) :2998-3003

[9] Structure and luminescence properties of an amorphous hydrogenated carbon [J].

Silva, SRP ;

Robertson, J ;

Rusli ;

Amaratunga, GAJ ;

Schwan, J .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1996, 74 (04) :369-386

[10] Novel luminescence properties of a-C:H films produced by using an organic source at various substrate temperatures [J].

Xu, J ;

Ma, TF ;

Li, W ;

Chen, KJ ;

Du, JF ;

Huang, XF .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2000, 266 :769-772

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