Organic photodetector with spectral response tunable across the visible spectrum by means of internal optical microcavity

An, Kwang Hyup; O’Connor, Brendan; Pipe, Kevin P.; Shtein, Max

doi:10.1016/j.orgel.2009.06.003

Cited by 56 publications

(25 citation statements)

References 20 publications

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“…This can lead to a severe overestimation of D* especially in nanostructured photodetector systems that are dominated by flicker noise (1/f) at frequencies below 1-10 kHz. r 122,123 …”

Section: Selective Photodetection and Charge Collection Narrowing (Ccn)mentioning

confidence: 99%

Solution-processed semiconductors for next-generation photodetectors

et al. 2017

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“…This can lead to a severe overestimation of D* especially in nanostructured photodetector systems that are dominated by flicker noise (1/f) at frequencies below 1-10 kHz. r 122,123 …”

Section: Selective Photodetection and Charge Collection Narrowing (Ccn)mentioning

confidence: 99%

Solution-processed semiconductors for next-generation photodetectors

et al. 2017

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“…[ 121 ] A narrow spectral response (FWHM ≈100 nm) was achieved for a device with the structure Al/MoOx/CuPc( N24 )/ C 60 ( N19 )/BCP( N30 )/Ag. A key result of the work of An et al was that by increasing the optical spacer thickness it was possible to tune in more than one mode within the cavity and as a result a bimodal response could be obtained, although this of course affects the monochromaticity (Figure 17 b).…”

Section: Reviewmentioning

confidence: 97%

Section: Device Optics Engineeringmentioning

confidence: 99%

Organic Photodiodes: The Future of Full Color Detection and Image Sensing

et al. 2016

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Major growth in the image sensor market is largely as a result of the expansion of digital imaging into cameras, whether stand-alone or integrated within smart cellular phones or automotive vehicles. Applications in biomedicine, education, environmental monitoring, optical communications, pharmaceutics and machine vision are also driving the development of imaging technologies. Organic photodiodes (OPDs) are now being investigated for existing imaging technologies, as their properties make them interesting candidates for these applications. OPDs offer cheaper processing methods, devices that are light, flexible and compatible with large (or small) areas, and the ability to tune the photophysical and optoelectronic properties - both at a material and device level. Although the concept of OPDs has been around for some time, it is only relatively recently that significant progress has been made, with their performance now reaching the point that they are beginning to rival their inorganic counterparts in a number of performance criteria including the linear dynamic range, detectivity, and color selectivity. This review covers the progress made in the OPD field, describing their development as well as the challenges and opportunities.

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“…These micro-cavity phenomena can act to broaden or narrow certain spectral features 30 . Understanding this physics provides additional tools for response tuning-varying the thickness of the photo-active layer 31 or the use of optical spacers to control the micro-cavity effects 32 . However, the strong blue-green fullerene absorption prevents the design of a single-mode red or NIR cavity.…”

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confidence: 99%

Narrowband light detection via internal quantum efficiency manipulation of organic photodiodes

et al. 2015

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Spectrally selective light detection is vital for full-colour and near-infrared (NIR) imaging and machine vision. This is not possible with traditional broadband-absorbing inorganic semiconductors without input filtering, and is yet to be achieved for narrowband absorbing organic semiconductors. We demonstrate the first sub-100 nm full-width-at-half-maximum visible-blind red and NIR photodetectors with state-of-the-art performance across critical response metrics. These devices are based on organic photodiodes with optically thick junctions. Paradoxically, we use broadband-absorbing organic semiconductors and utilize the electro-optical properties of the junction to create the narrowest NIR-band photoresponses yet demonstrated. In this context, these photodiodes outperform the encumbent technology (input filtered inorganic semiconductor diodes) and emerging technologies such as narrow absorber organic semiconductors or quantum nanocrystals. The design concept allows for response tuning and is generic for other spectral windows. Furthermore, it is materialagnostic and applicable to other disordered and polycrystalline semiconductors.

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Organic photodetector with spectral response tunable across the visible spectrum by means of internal optical microcavity

Cited by 56 publications

References 20 publications

Solution-processed semiconductors for next-generation photodetectors

Solution-processed semiconductors for next-generation photodetectors

Organic Photodiodes: The Future of Full Color Detection and Image Sensing

Narrowband light detection via internal quantum efficiency manipulation of organic photodiodes

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