Integrated blue-sensitive polarization-dependent photodetector

Chu, Jinkui; Wang, Zhiwen; Zhang, Yingjie; Liu, Ze; Wang, Yinlong

doi:10.1117/1.jmm.12.3.033005

Cited by 13 publications

(11 citation statements)

References 24 publications

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“…If the accuracies of polarized-light sensors and compasses can be improved, the accuracies of our device can be improved significantly. We are going to build better devices with higher accuracy, smaller sizes 24 25 and the ability to evade the neutral points. Simple and useful ways to find the best solution from the possibilities are significant too.…”

Section: Discussionmentioning

confidence: 99%

A novel autonomous real-time position method based on polarized light and geomagnetic field

Wang

Chu

Zhang

et al. 2015

Sci Rep

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Many animals exploit polarized light in order to calibrate their magnetic compasses for navigation. For example, some birds are equipped with biological magnetic and celestial compasses enabling them to migrate between the Western and Eastern Hemispheres. The Vikings' ability to derive true direction from polarized light is also widely accepted. However, their amazing navigational capabilities are still not completely clear. Inspired by birds' and Vikings' ancient navigational skills. Here we present a combined real-time position method based on the use of polarized light and geomagnetic field. The new method works independently of any artificial signal source with no accumulation of errors and can obtain the position and the orientation directly. The novel device simply consists of two polarized light sensors, a 3-axis compass and a computer. The field experiments demonstrate device performance.

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Section: Discussionmentioning

confidence: 99%

A novel autonomous real-time position method based on polarized light and geomagnetic field

Wang

Chu

Zhang

et al. 2015

Sci Rep

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“…Among all the navigation technologies [1][2], polarization navigation [3][4][5][6][7][8][9] has gained more and more attention because it has many unique advantages, such as undisturbed by artificial interference, without accumulation of time, etc. Recently, several polarization navigation sensors have been constructed [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Nanogratings with multi-orientation can be fabricated by using only one step of NIL. We have integrated the bilayer nanowire polarizer with a photodetector by using NIL [8,9], and the device was applied as a polarization navigation sensor.…”

Section: Introductionmentioning

confidence: 99%

Single-Layer Nanowire Polarizer Integrated With Photodetector and Its Application for Polarization Navigation

et al. 2016

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We report a method of integrating the single layer nanowire polarizers with photodetectors, and the fabricated device is used as the polarization navigation sensor. The fabrication processes mainly base on nanoimprint lithography and dry etching. The fabrication method can fabricate nanogratings with multi-orientation simultaneously, so angular alignment error is eliminated. The external quantum efficiency of the integrated device is tested, and peak external quantum efficiency of 23% at around 440nm is achieved. The indoor angle output experiment of navigation sensor is investigated, and the angle output error is tested to be within ±0.1°. The outdoor angle output experiment has also been tested, and the errors are less than ±1.5°. The measurement results show the fabricated device is suitable for polarization navigation.

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“…Over past years, various strategies have been developed to realize the sensitive detection of linearly polarized light. A conventional way is to assemble polarization-insensitive photodiodes with spatially separated polarized components such as periodic subwavelength gratings 7 . Although successful integration and commercialization have been achieved, this strategy requires bulky and complicated optical systems that add to the manufacturing cost.…”

mentioning

confidence: 99%

“…4b). In contrast to conventional bio-inspired polarization navigation sensors that consists of bulky and spatially separated UV light filter, polarizer, and polarization-insensitive photodiode 7 (Fig. 4c), the combination of the visible-blind UV response nature with the ultrahigh polarization sensitivity of the C8-BTBT-based OPT enables a filterless, polarizer-free, and miniaturized route towards polarization navigation (Fig.…”

mentioning

confidence: 99%

Anisotropic charge trapping in phototransistors unlocks ultrasensitive polarimetry

Pan¹,

Zhang²,

et al. 2021

Preprint

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Being able to probe the polarization states of light is crucial for applications from medical diagnostics and bio-inspired navigation to information encryption and quantum computing. Current state-of-the-art polarimeters based on anisotropic semiconductors enable direct linear dichroism photodetection without the need for bulky and complex external optics. However, their polarization sensitivity is restricted by the inherent optical anisotropy, leading to low dichroic ratios of typically smaller than ten. Here, we unveil an effective and general design rule to achieve a more than 2,000-fold enhanced polarization sensitivity by exploiting a light-induced anisotropic gating effect in organic phototransistors. The polarization-dependent trapping of photogenerated charge carriers provides an anisotropic photo-induced gate for current amplification, which has resulted in an extremely high dichroic ratio of over 1.2×104, more than two orders of magnitude higher than any previous reports. These findings further enable the first demonstration of a novel miniaturized bionic celestial compass for skylight-based polarization navigation. Our results offer a fundamental design principle and a new route for the development of next-generation highly polarization-sensitive optoelectronics.

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Integrated blue-sensitive polarization-dependent photodetector

Cited by 13 publications

References 24 publications

A novel autonomous real-time position method based on polarized light and geomagnetic field

A novel autonomous real-time position method based on polarized light and geomagnetic field

Single-Layer Nanowire Polarizer Integrated With Photodetector and Its Application for Polarization Navigation

Anisotropic charge trapping in phototransistors unlocks ultrasensitive polarimetry

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