Details

Autor(en) / Beteiligte

• Reznik, A.
• Jandieri, K.
• Gebhard, F.
• Baranovskii, S. D.

Titel

Non-Onsager mechanism of long-wave photogeneration in amorphous selenium at high electric fields

Ist Teil von

• Applied physics letters, 2012-03, Vol.100 (13), p.132101-132101-4

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2012

Quelle

AIP Journals Complete

Beschreibungen/Notizen

• The quantum efficiency of the free-carrier-photogeneration in amorphous selenium avalanche blocking structures is studied experimentally in a wide range of wavelengths (380-600nm) at high electric fields ( 10 − 112 . 5 V μ m − 1 ). While at comparatively small excitation wavelengths (up to ≃ 540 nm ), our experimental results are consistent with the Onsager theory of electron-hole pair dissociation [L. Onsager, Phys. Rev. 54 , 554 (1938)], at larger wavelengths (540-600nm) and high electric fields Onsager theory fails to explain our results. The reason for the failure of the Onsager approach is discussed and an alternative theoretical tool is adopted to account for the experimental observations.