Visible spectrum photodetector devices fabricated using molecular crystals of carbon C₆₀ are reported. The devices operate efficiently, extending over and beyond the full visible light spectrum (300–710 nm) with a bias voltage tunable responsivity of 4 mA–0.5 mA W⁻¹. Across this range of wavelengths, the noise equivalent power of these devices remains below 10² nW Hz^−1/2, providing a detectivity of 10⁷ Jones. The noise current in these devices is found to have a strong dependence on both bias voltage and frequency, varying by 4 orders of magnitude from 1 nA Hz^−1/2 to 0.1 pA Hz^−1/2. The devices also display a near‐linear dependence of photocurrent on light intensity over 4 orders of magnitude, providing a dynamic range approaching 80 dB. The 3 dB bandwidth of the devices is found to be above 10² Hz, while the 18 dB bandwidth exceeds 1 kHz. The transient photocurrents of the devices have a rise time of ≈50 µs and a long fall time of ≈4 ms. The spectral photocurrent of the devices is found to quench gradually with a reduction in temperature from ≈300 K and is fully quenched at temperatures below T ≈ 100 K. Upon reheating, the device performance is fully recovered.

中文翻译：

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用于可见光谱光电探测器的可溶液处理的一维富勒烯C60晶体

报道了使用碳C _60的分子晶体制造的可见光谱光电检测器装置。器件工作效率高，可在4-0.5 mA W ^-1的偏置电压可调响应率范围内，扩展到整个可见光谱（300-710 nm）之外。在此波长范围内，这些设备的等效噪声功率保持在10 ² nW Hz ^-1/2以下，从而提供10 ⁷ Jones的探测率。发现这些器件中的噪声电流对偏置电压和频率都有很强的依赖性，从1 nA Hz ^-1/2到0.1 pA Hz ^-1/2有4个数量级的变化。。这些器件还显示出光电流对4个数量级以上的光强度具有近乎线性的依赖性，提供了接近80 dB的动态范围。发现设备的3 dB带宽高于10 ² Hz，而18 dB带宽超过1 kHz。器件的瞬态光电流的上升时间为≈50µs，较长的下降时间为≈4ms。的器件的光谱光电流被发现与来自≈300K的温度的降低逐渐淬灭并在温度低于完全猝灭Ť ≈100 K.再加热时，该装置的性能完全恢复。