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Large-area low-noise flexible organic photodiodes for detecting faint visible light
Science ( IF 56.9 ) Pub Date : 2020-11-05 , DOI: 10.1126/science.aba2624
Canek Fuentes-Hernandez 1 , Wen-Fang Chou 1 , Talha M. Khan 1 , Larissa Diniz 1 , Julia Lukens 1 , Felipe A. Larrain 1 , Victor A. Rodriguez-Toro 1 , Bernard Kippelen 1
Affiliation  

Low-noise organic photodetectors Although the high performance and low cost of visible light silicon photodetectors suffice for most applications, their small size and rigid nature are not optimal for applications such as wearable sensors. Organic photodetectors can be flexible and large in area but are often noisy. Fuentes-Hernandez et al. found that optimized choices of the semiconductor and electrode materials that improve diode characteristics enable organic photodetectors that can detect low light levels with low noise. Science, this issue p. 698 Low-noise organic photodetectors with optimized charge-collecting electrodes enable low-light detection over large areas. Silicon photodiodes are the foundation of light-detection technology; yet their rigid structure and limited area scaling at low cost hamper their use in several emerging applications. A detailed methodology for the characterization of organic photodiodes based on polymeric bulk heterojunctions reveals the influence that charge-collecting electrodes have on the electronic noise at low frequency. The performance of optimized organic photodiodes is found to rival that of low-noise silicon photodiodes in all metrics within the visible spectral range, except response time, which is still video-rate compatible. Solution-processed organic photodiodes offer several design opportunities exemplified in a biometric monitoring application that uses ring-shaped, large-area, flexible, organic photodiodes with silicon-level performance.

中文翻译:

用于检测微弱可见光的大面积低噪声柔性有机光电二极管

低噪声有机光电探测器虽然可见光硅光电探测器的高性能和低成本足以满足大多数应用,但它们的小​​尺寸和刚性特性对于可穿戴传感器等应用并不理想。有机光电探测器可以灵活且面积大,但通常嘈杂。富恩特斯-埃尔南德斯等人。发现改善二极管特性的半导体和电极材料的优化选择使有机光电探测器能够以低噪声检测低光水平。科学,这个问题 p。698 具有优化电荷收集电极的低噪声有机光电探测器可实现大面积的弱光探测。硅光电二极管是光检测技术的基础;然而,它们的刚性结构和低成本的有限面积缩放阻碍了它们在一些新兴应用中的使用。基于聚合物本体异质结的有机光电二极管表征的详细方法揭示了电荷收集电极对低频电子噪声的影响。发现优化的有机光电二极管的性能在可见光谱范围内的所有指标上都可以与低噪声硅光电二极管相媲美,但响应时间除外,响应时间仍然与视频速率兼容。经过溶液处理的有机光电二极管提供了多种设计机会,例如生物识别监测应用,该应用使用具有硅级性能的环形、大面积、柔性有机光电二极管。基于聚合物本体异质结的有机光电二极管表征的详细方法揭示了电荷收集电极对低频电子噪声的影响。发现优化的有机光电二极管的性能在可见光谱范围内的所有指标上都可以与低噪声硅光电二极管相媲美,但响应时间除外,响应时间仍然与视频速率兼容。经过溶液处理的有机光电二极管提供了多种设计机会,例如生物识别监测应用,该应用使用具有硅级性能的环形、大面积、柔性有机光电二极管。基于聚合物本体异质结的有机光电二极管表征的详细方法揭示了电荷收集电极对低频电子噪声的影响。发现优化的有机光电二极管的性能在可见光谱范围内的所有指标上都可以与低噪声硅光电二极管相媲美,但响应时间除外,响应时间仍然与视频速率兼容。经过溶液处理的有机光电二极管提供了多种设计机会,例如生物识别监测应用,该应用使用具有硅级性能的环形、大面积、柔性有机光电二极管。发现优化的有机光电二极管的性能在可见光谱范围内的所有指标上都可以与低噪声硅光电二极管相媲美,但响应时间除外,响应时间仍然与视频速率兼容。经过溶液处理的有机光电二极管提供了多种设计机会,例如生物识别监测应用,该应用使用具有硅级性能的环形、大面积、柔性有机光电二极管。发现优化的有机光电二极管的性能在可见光谱范围内的所有指标上都可以与低噪声硅光电二极管相媲美,但响应时间除外,响应时间仍然与视频速率兼容。经过溶液处理的有机光电二极管提供了多种设计机会,例如生物识别监测应用,该应用使用具有硅级性能的环形、大面积、柔性有机光电二极管。
更新日期:2020-11-05
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