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Current issue   Ukr. J. Phys. 2014, Vol. 58, N 5, p.465-471

    Paper

Mirsagatov Sh.A.1, Zaveryukhin B.N.1, Ataboev O.K.2, Zaviryukhina N.N.1

1 Physical and Technical Institute, Scientific Production Association “Physics–Sun”,
Uzbek Academy of Sciences
(2b, Bodomzor Str., Tashkent 100084, Uzbekistan; e-mail: mirsagatov@uzsci.net)
2 Berdakh Karakalpak State University
(1, Ch. Abdirov Str., Nukus 230113, Republic Karakalpakistan; e-mail: omonboy12@uzsci.net)

Cascade Injection Photodetector for the 500−650-nm Spectral Range on the Basis of Solid Solutions of A2B6 Compounds

Section: Solid matter
Original Author's Text: Ukrainian

Abstract: The parameters of film injection photodetectors (FIPDs) created on the basis of solid solutions of A2B6 compounds for a spectral range of 500–650 nm have been studied. The sensitive region of FIPDs is formed as a sandwich from films with different composition contents and different energy gap widths. The mechanism of FIPD functioning is based on the selective absorption of radiation by films and its conversion into an electric signal. FIPDs are characterized by an internal enhancement of a photocurrent and can efficiently register weak optical signals at illuminances E ≤ 1 lux and the temperature T = 300 K. The integral sensitivity of FIPDs is Sint ≈ 75 A/lm (≈ 8 × 103 A/W).

Key words: injection photodetector, photocurrent, Schottky barrier.