Analysis of Photoelectric Characteristics of UV-Range Focal Plane Arrays

Resumo

Photoelectric characteristics of the focal plane arrays working in the visual-blind UV spectral range are studied. The dependences of the signal-to-noise ratio (SNR) on the integration time and the bias voltage on photodiodes and I–V characteristics of the photodiodes are measured. It is shown that ROIC noise dominates over the noise of photosensitive elements. The results indicate that the maximum integration time and bias voltage are needed to reach the best SNR. The method used to measure the I–V characteristics after hybridization with ROIC makes it possible to measure the dark currents of the individual photodiodes at typical values of 4 × 10^–15 A.