Photoluminescence and surface photovoltage spectroscopy studies of hydroxyapatite nano-Bio-ceramics

G. Rosenman; D. Aronov; L. Oster; J. Haddad; G. Mezinskis; I. Pavlovska; M. Chaikina; A. Karlov

doi:10.1016/j.jlumin.2006.01.331

Photoluminescence and surface photovoltage spectroscopy studies of hydroxyapatite nano-Bio-ceramics

G. Rosenman, D. Aronov, L. Oster, J. Haddad, G. Mezinskis, I. Pavlovska, M. Chaikina, A. Karlov

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

Photoluminescence (PL) and surface photovoltage spectroscopy applied to nanostructural bioceramics hydroxyapatite (HAp) allowed to study electron (hole) energy states spectra of HAP and distinguish bulk and surface localized levels. Studied PL excitation spectra allowed obtaining an exact value of the energy band gap in HAP: E_g=3.95 eV.This result is consistent with E_g value determined by the contact potential difference (ΔCPD) curves treatment method as E_g=3.94 eV. Comparison between ΔCPD and PL spectra indicates that the energy spectra of electron - hole levels studied by two different experimental spectroscopy techniques are very similar. This comparison enables to conclude that all HAp samples have identical electron - hole states structures consisting of five bulk states and one surface state. It is assumed that the deep electron (hole) charged states may be responsible for high bioactivity of the HAp nanoceramics.

Original language	English
Pages (from-to)	936-938
Number of pages	3
Journal	Journal of Luminescence
Volume	122-123
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jlumin.2006.01.331
Publication status	Published - Jan 2007
Externally published	Yes

Keywords*

Hydroxyapatite
Photoluminescence
Photovoltage spectroscopy.

Field of Science*

1.3 Physical sciences
1.4 Chemical sciences
2.5 Materials engineering

Publication Type*

1.1. Scientific article indexed in Web of Science and/or Scopus database

Access to Document

10.1016/j.jlumin.2006.01.331

Cite this

@article{b7f077cb9b0d4b739f6d784ce9e51f7e,

title = "Photoluminescence and surface photovoltage spectroscopy studies of hydroxyapatite nano-Bio-ceramics",

abstract = "Photoluminescence (PL) and surface photovoltage spectroscopy applied to nanostructural bioceramics hydroxyapatite (HAp) allowed to study electron (hole) energy states spectra of HAP and distinguish bulk and surface localized levels. Studied PL excitation spectra allowed obtaining an exact value of the energy band gap in HAP: Eg=3.95 eV.This result is consistent with Eg value determined by the contact potential difference (ΔCPD) curves treatment method as Eg=3.94 eV. Comparison between ΔCPD and PL spectra indicates that the energy spectra of electron - hole levels studied by two different experimental spectroscopy techniques are very similar. This comparison enables to conclude that all HAp samples have identical electron - hole states structures consisting of five bulk states and one surface state. It is assumed that the deep electron (hole) charged states may be responsible for high bioactivity of the HAp nanoceramics.",

keywords = "Hydroxyapatite, Photoluminescence, Photovoltage spectroscopy.",

author = "G. Rosenman and D. Aronov and L. Oster and J. Haddad and G. Mezinskis and I. Pavlovska and M. Chaikina and A. Karlov",

year = "2007",

month = jan,

doi = "10.1016/j.jlumin.2006.01.331",

language = "English",

volume = "122-123",

pages = "936--938",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Photoluminescence and surface photovoltage spectroscopy studies of hydroxyapatite nano-Bio-ceramics

AU - Rosenman, G.

AU - Aronov, D.

AU - Oster, L.

AU - Haddad, J.

AU - Mezinskis, G.

AU - Pavlovska, I.

AU - Chaikina, M.

AU - Karlov, A.

PY - 2007/1

Y1 - 2007/1

N2 - Photoluminescence (PL) and surface photovoltage spectroscopy applied to nanostructural bioceramics hydroxyapatite (HAp) allowed to study electron (hole) energy states spectra of HAP and distinguish bulk and surface localized levels. Studied PL excitation spectra allowed obtaining an exact value of the energy band gap in HAP: Eg=3.95 eV.This result is consistent with Eg value determined by the contact potential difference (ΔCPD) curves treatment method as Eg=3.94 eV. Comparison between ΔCPD and PL spectra indicates that the energy spectra of electron - hole levels studied by two different experimental spectroscopy techniques are very similar. This comparison enables to conclude that all HAp samples have identical electron - hole states structures consisting of five bulk states and one surface state. It is assumed that the deep electron (hole) charged states may be responsible for high bioactivity of the HAp nanoceramics.

AB - Photoluminescence (PL) and surface photovoltage spectroscopy applied to nanostructural bioceramics hydroxyapatite (HAp) allowed to study electron (hole) energy states spectra of HAP and distinguish bulk and surface localized levels. Studied PL excitation spectra allowed obtaining an exact value of the energy band gap in HAP: Eg=3.95 eV.This result is consistent with Eg value determined by the contact potential difference (ΔCPD) curves treatment method as Eg=3.94 eV. Comparison between ΔCPD and PL spectra indicates that the energy spectra of electron - hole levels studied by two different experimental spectroscopy techniques are very similar. This comparison enables to conclude that all HAp samples have identical electron - hole states structures consisting of five bulk states and one surface state. It is assumed that the deep electron (hole) charged states may be responsible for high bioactivity of the HAp nanoceramics.

KW - Hydroxyapatite

KW - Photoluminescence

KW - Photovoltage spectroscopy.

UR - http://www.scopus.com/inward/record.url?scp=33750963462&partnerID=8YFLogxK

U2 - 10.1016/j.jlumin.2006.01.331

DO - 10.1016/j.jlumin.2006.01.331

M3 - Article

AN - SCOPUS:33750963462

SN - 0022-2313

VL - 122-123

SP - 936

EP - 938

JO - Journal of Luminescence

JF - Journal of Luminescence

IS - 1-2

ER -

Photoluminescence and surface photovoltage spectroscopy studies of hydroxyapatite nano-Bio-ceramics

Abstract

Keywords*

Field of Science*

Publication Type*

Access to Document

Other files and links

Fingerprint

Cite this