On conversion processes of CdF2:MF3

Szadkowski, A.; Lubomirska-Wittlin, A.; Zareba, A.; Krukowska-Fulde, B.

doi:10.1002/pssa.2210440155

Cited by 7 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The photoconductivity spectrum at 77 K, related to the photoionization is presented in Fig. 2 and agrees well with the value of the optical ionization energy, determined in [1] from the absorption spectum. It turned out that the photoionization current (carried by electrons) can be quenched by photons in the 0.8+2 eV energy range.…”

supporting

confidence: 82%

“…We disagree with this conclusion. In [1] we suggested that the threshold of the transitions (2) is actually at the lower photon energy, and the apparent threshold at 1.1 eV marks only the onset of the stronger transitions to the excited 5 Τ2 state of the iron centre (0.36 eV [3] above the 5 Ε ground state). Now we are going to show that the photoneutralization threshold is really below 1.1 eV.…”

mentioning

confidence: 94%

“…In our previous paper on the iron centres in ZnSe [1] we have described the first observation of the photoionization of the Fee+ centres:…”

mentioning

confidence: 99%

See 2 more Smart Citations

Photoneutralization of the Fe³⁺Centers in the ZnSe Crystals Heavily Doped with Iron

Lubomirska-Wittlin

Szadkowski

Demianiuk³

1991

Acta Phys. Pol. A

Self Cite

View full text Add to dashboard Cite

Photoconductivity and optical quenching of the photoconductivity were measured. The photoneutralization of the Fe 3 + centres has been found to occur for photon energies down to 0.8 eV (i.e. the threshold can not be at 1.1 eV, as often quoted). The conclusion from our previous paper that the lattice relaxation energy is small, has been confirmed. It has to be smaller than 0.1 eV.PACS numbers: 71.55. Gs, 72.40.+w In ZnSe:Fe iron atoms substitute zinc and (speaking in the ionic language) in the Fee+ charge state they are neutral with respect to the lattice. The presence of the Fe3 + ( ionized) centres results from the compensation by shallow acceptors.In our previous paper on the iron centres in ZnSe [1] we have described the first observation of the photoionization of the Fee+ centres:and we have determined the optical ionization energy of the Fee+ centres at 77 K-2.1 eV ± 0.1 eV. As the thermal activation energy of the valence band -iron level transitions was found in the Hall effect measurements [2] to be 0.62 eV, and the energy gap at 77 K is 2.81 eV, we concluded that the lattice relaxation energy is small and the Fe2 +/3 + donor level in ZnSe is at 77 K both optically and thermally about 2.1 eV below the conduction band.(337)

show abstract

supporting

confidence: 82%

mentioning

confidence: 94%

See 1 more Smart Citation

Photoneutralization of the Fe³⁺Centers in the ZnSe Crystals Heavily Doped with Iron

Lubomirska-Wittlin

Szadkowski

Demianiuk³

1991

Acta Phys. Pol. A

Self Cite

View full text Add to dashboard Cite

show abstract

“…Another method of conversion was elaborated by Szadkowski and co-workers (Szadkowski et al 1977). The samples of CdF2:Yb (or Y) in contact with liquid metal (Sn, Woods metal) were heated for about 1 h at 360°C and an effective conversion occurred.…”

mentioning

confidence: 99%

Modified method of conversion of CdF₂into a semiconductor

Wojciechowski¹,

Kamińska²

1979

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

Electrochemical method to determine physical surface properties of rare-earth and manganese fluoride doped CdF2 crystals

Wolkenberg

Zyński

Wasilewska

1979

Phys. Stat. Sol. (a)

View full text Add to dashboard Cite

CdF2 crystals doped with fluorides of rare earth metals and manganese with free carrier concentration of the order of 1 to 2 × 1017 cm−3 are investigated. It is shown that after consecutive stripping of the catholyte and anolyte surfaces the area of the decomposition of CdF2 is some microns thick and in the bulk of the wafer the degree of the decomposition consequently changes. The electroluminescence of the wafers after electrochemical processes is of the same order as that of the untreated CdF2 crystals. In conclusion it is stated that n‐type CdF2 crystals exhibit electroluminescence degradation during electric charge transport. It seems that not only the changes in the chemical composition influence the luminescence duration. The degradation is rather caused by the decrease in conductivity of interface of CdF2–metal electrodes.

show abstract

On conversion processes of CdF2:MF3

Cited by 7 publications

References 10 publications

Photoneutralization of the Fe³⁺Centers in the ZnSe Crystals Heavily Doped with Iron

Photoneutralization of the Fe³⁺Centers in the ZnSe Crystals Heavily Doped with Iron

Modified method of conversion of CdF₂into a semiconductor

Electrochemical method to determine physical surface properties of rare-earth and manganese fluoride doped CdF2 crystals

Contact Info

Product

Resources

About

On conversion processes of CdF2:MF3

Cited by 7 publications

References 10 publications

Photoneutralization of the Fe3+Centers in the ZnSe Crystals Heavily Doped with Iron

Photoneutralization of the Fe3+Centers in the ZnSe Crystals Heavily Doped with Iron

Modified method of conversion of CdF2into a semiconductor

Electrochemical method to determine physical surface properties of rare-earth and manganese fluoride doped CdF2 crystals

Contact Info

Product

Resources

About

Photoneutralization of the Fe³⁺Centers in the ZnSe Crystals Heavily Doped with Iron

Photoneutralization of the Fe³⁺Centers in the ZnSe Crystals Heavily Doped with Iron

Modified method of conversion of CdF₂into a semiconductor