Study of the photovoltaic frequency-response function in thin YBCO films

Grachev, A. I.; Karavaev, P. M.; Shul, S. G.; Ioffe, A. F.

doi:10.1134/1.1130657

Cited by 3 publications

(1 citation statement)

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“…The thermoelectric behaviour of crystalline metallic (x ∼ 1) and semiconducting (oxygen deficient, x 0.5) YBa 2 Cu 3 O 6+x (YBCO) and similar compounds in the normal state [4][5][6][7][8][9][10][11][12][13][14][15] has been studied extensively in recent years. Very recently, thermoelectric behaviour has been investigated in amorphous, semiconducting YBCO thin films [16].…”

Section: Introductionmentioning

confidence: 99%

Cryogenic performance of semiconducting Y-Ba-Cu-O for infrared detection

Almasri

Butler

Çelik‐Butler³

et al. 1999

Supercond. Sci. Technol.

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At room temperature, YBCO possesses a relatively high temperature coefficient of resistance, −3.5% K −1 , and a high pyroelectric coefficient, up to 20 µC cm −2 K −1. In this work, we report on the cryogenic characterization of semiconducting Y-Ba-Cu-O thin films on substrates in response to 100 fs optical pulses at 810 nm and suspended thin film pixels in response to chopped broadband infrared radiation. The temperature dependence of the zero-bias pyroelectric response of the detectors is reported.

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Section: Introductionmentioning

confidence: 99%

Cryogenic performance of semiconducting Y-Ba-Cu-O for infrared detection

Almasri

Butler

Çelik‐Butler³

et al. 1999

Supercond. Sci. Technol.

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Zero temperature coefficient of resistivity induced by photovoltaic effect in Y Ba2Cu3O6.96 ceramics

2015

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I-V characteristics of YBCO-Ag system under blue laser (λ = 450 nm) illumination were studied from 100 to 300 K and obvious photovoltaic effects were observed. All the I-V curves in the temperature range intersect at a point in the first quadrant while the laser points to the cathode electrode, indicating a zero temperature coefficient of resistivity. This implies that the outputting voltage keeps constant in a broad temperature range when a critical bias current is assigned. The intersection points of different laser intensities fall in a straight line, the slope of which (Rc) is independent of temperature and laser intensity.

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