Filamentation of Light Emission in an Infrared-Visible Image Converter with a Semiconductor Photodetector

Hilal YÜCEL KURT; H. Soner KIYMAZ

Makale detayları

Filamentation of Light Emission in an Infrared-Visible Image Converter with a Semiconductor Photodetector

Yazarlar:

Hilal YÜCEL KURT | H. Soner KIYMAZ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2002 Vol.26 Issue 1, pp.67-72

Belge Tipi:

Makale

Yayın Tarihi:

12/2001

Belge Dili:

Türkçe

Document ID (Org No.):

2000762288

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Anahtar kelimeler:

Özet:

 

This work studies the light emission patterns associated with the spatial   modulation of the transversal distribution of the current density in a   converter cell with a GaAs semiconductor cathode. Such light emission   exhibits spatial structures of current filaments depending on the feeding   voltage, illumination intensity, gas pressure and the surface treatment of   the electrodes. When the current is increased above the stable limit,   breakdown or small current filamentations begin. However, n-GaAs exhibits an   S-shaped current-density-field relation due to impact ionization of carriers   from shallow donors into the conduction band under high electric fields. The   assessment of the filament formation is then based on analysis of the   discharge light emission, recorded through a transparent anode. The   filamentation was primarily due to the formation of a space charge   of positive ions in the discharge gap, which changed the discharge from the   Townsend to the glow type.

 

This work studies the light emission patterns associated with the spatial   modulation of the transversal distribution of the current density in a   converter cell with a GaAs semiconductor cathode. Such light emission   exhibits spatial structures of current filaments depending on the feeding   voltage, illumination intensity, gas pressure and the surface treatment of   the electrodes. When the current is increased above the stable limit,   breakdown or small current filamentations begin. However, n-GaAs exhibits an   S-shaped current-density-field relation due to impact ionization of carriers   from shallow donors into the conduction band under high electric fields. The   assessment of the filament formation is then based on analysis of the   discharge light emission, recorded through a transparent anode. The   filamentation was primarily due to the formation of a space charge   of positive ions in the discharge gap, which changed the discharge from the   Townsend to the glow type.

Makale detayları

Filamentation of Light Emission in an Infrared-Visible Image Converter with a Semiconductor Photodetector

Yazarlar:

Hilal YÜCEL KURT | H. Soner KIYMAZ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2002 Vol.26 Issue 1, pp.67-72

Belge Tipi:

Makale

Yayın Tarihi:

12/2001

Belge Dili:

Türkçe

Document ID (Org No.):

2000762288

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Turk. J. Phys.

26

(2002)

67-72. Full text: pdf Other articles published in the same issue: Turk. J. Phys.

vol.26

iss.1.

Sayı

Makale detayları

Filamentation of Light Emission in an Infrared-Visible Image Converter with a Semiconductor Photodetector

Yazarlar: Hilal YÜCEL KURT | H. Soner KIYMAZ

Yayıncı: TUBITAK

Dergi: Turkish Journal of Physics 2002 Vol.26 Issue 1, pp.67-72

Belge Tipi: Makale

Yayın Tarihi: 12/2001

Belge Dili: Türkçe

Document ID (Org No.): 2000762288

Sıklık: İki Aylık

eISSN: 1303-6122

pISSN: 1300-0101

Turk. J. Phys.

26

(2002)

67-72. Full text: pdf Other articles published in the same issue: Turk. J. Phys.

vol.26

iss.1.

Sayı

Yazarlar:

Hilal YÜCEL KURT | H. Soner KIYMAZ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2002 Vol.26 Issue 1, pp.67-72

Belge Tipi:

Makale

Yayın Tarihi:

12/2001

Belge Dili:

Türkçe

Document ID (Org No.):

2000762288

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101