OLED and OPD-based mini-spectrometer integrated on a single-mode planar waveguide chip

Ramuz, Marc; Leuenberger, D.; Pfeiffer, R.; Bürgi, Lukas; Winnewisser, C.

doi:10.1051/epjap/2009025

Cited by 12 publications

(9 citation statements)

References 19 publications

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“…However, this approach suffered from two main drawbacks: (i) absence of the TM mode in the waveguide and (ii) only the boundary area of the PLED contributed to the light coupling into the waveguide and thus the total power that can be coupled into the waveguide is limited. In both cases the proximity of the absorptive electrodes of the PLED to the waveguide quenched the light power 19. Unless PLED electrode materials with less detrimental optical properties will be available, this approach is of reduced interest for our purpose, due to the limited optical power coupled to the waveguide in general and in particular, because several optical bio sensors for example, SPR‐based—rely on excitation by TM polarized modes.…”

Section: Resultsmentioning

confidence: 99%

“…Also, due to absence of conducting quencher materials in close vicinity of the waveguide the loss mechanisms inferred by the PL layer are much less severe than in the case of the PLED and thus the whole area of the PL material contributes to pumping the waveguide. Therefore, by increasing the PL‐material length L together with the size of the PLED the optical pump power in the waveguide can be increased proportionally 19. We measured the power at the PL‐material stage and the power at the out‐coupling grating with values of P

_{PL}^{meas}

= 8.2 μW and P

_{Grating}^{meas}

= 0.075 μW, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Optical biosensors based on integrated polymer light source and polymer photodiode

Ramuz

Leuenberger

Bürgi

2010

J Polym Sci B Polym Phys

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Evanescent coupling is used to couple light from an organic Lambertian emitter into a single-mode planar waveguide. A polymer light emitting diode pumps a photoluminescent layer located directly on top of the waveguide. At the out-coupling grating stage, a fully organic mini-spectrometer compatible with monolithical integration on optical bio chips has been developed. It consists of a single-mode waveguide with integrated diffraction grating and a dense array of polymer photodiodes as sensing element. An overall spectral resolution of down to 5 nm has been achieved with the integrated optoelectronic system. As a proof of principle the fully organic opti-cal device has been used in combination with a fluidic system to demonstrate an absorption-based bio-test with mouse immunoglobulin G. In a further step towards low-cost and disposable lab-on-chip biosensors, the mentioned organic building blocks have been combined with a surface plasmon stack integrated directly onto the single mode waveguide. V C 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 49: 80-87, 2011

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Section: Resultsmentioning

confidence: 99%

_{PL}^{meas}

= 8.2 μW and P

_{Grating}^{meas}

= 0.075 μW, respectively.…”

Section: Resultsmentioning

confidence: 99%

Optical biosensors based on integrated polymer light source and polymer photodiode

Ramuz

Leuenberger

Bürgi

2010

J Polym Sci B Polym Phys

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show abstract

“…Various authors (Yao et al, 2005;Hofmann et al, 2005;Pais et al, 2008;Ramuz et al, 2009;Lamprecht, 2010) demonstrated the utilization of an organic light emitting device (OLED) source as a fluorescence excitation source to produce a sensitive biochip.…”

Section: Introductionmentioning

confidence: 99%

OLED-based DNA biochip for Campylobacter spp. detection in poultry meat samples

Manzano

Cecchini

Fontanot

et al. 2015

Biosensors and Bioelectronics

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“…They are also attractive for analytical applications, advancing development of compact sensors and on-chip spectrometers [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. However, there exists a need for improvement in deep blue OLEDs for lighting and displays and UV OLEDs as excitation sources in sensing and analytical applications.…”

Section: Introductionmentioning

confidence: 99%

Deep blue/ultraviolet microcavity OLEDs based on solution-processed PVK:CBP blends

Hellerich

Manna

Heise

et al. 2015

Organic Electronics

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Keywords:UV-to-blue OLED arrays UV-to-blue microcavity OLED arrays PVK:CBP OLED arrays Polymer/small molecule mixed emission layer Ab initio simulations of OLED EL spectra a b s t r a c t There is an increasing need to develop stable, high-intensity, efficient OLEDs in the deep blue and UV. Applications include blue pixels for displays and tunable narrow solid-state UV sources for sensing, diagnostics, and development of a wide band spectrometer-on-a-chip. With the aim of developing such OLEDs we demonstrate an array of deep blue to near UV tunable microcavity (lc) OLEDs (k $373-469 nm) using, in a unique approach, a mixed emitting layer (EML) of poly(N-vinyl carbazole) (PVK) and 4,4 0 -bis(9-carbazolyl)-biphenyl (CBP), whose ITO-based devices show a broad electroluminescence (EL) in the wavelength range of interest. This 373-469 nm band expands the 493-640 nm range previously attained with lcOLEDs into the desired deep blue-to-near UV range. Moreover, the current work highlights interesting characteristics of the complexity of mixed EML emission in combinatorial 2-d lcOLED arrays of the structure 40 nm Ag/x nm MoO x /$30 nm PVK:CBP (3:1 weight ratio)/y nm 4,7-diphenyl-1,10-phenanthroline (BPhen)/1 nm LiF/100 nm Al, where x = 5, 10, 15, and 20 nm and y = 10, 15, 20, and 30 nm. In the short wavelength lc devices, only CBP emission was observed, while in the long wavelength lc devices the emission from both PVK and CBP was evident. To understand this behavior simulations based on the scattering matrix method, were performed. The source profile of the EML was extracted from the measured EL of ITO-based devices. The calculated lc spectra indeed indicated that in the thinner, short wavelength devices the emission is primarily from CBP; in the thicker devices both CBP and PVK contribute to the EL. This situation is due to the effect of the optical cavity length on the relative contributions of PVK and CBP EL through a change in the wavelength-dependent emission rate, which was not suggested previously. Structural analysis of the EML and the preceding MoO x layer complemented the data analysis.

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OLED and OPD-based mini-spectrometer integrated on a single-mode planar waveguide chip

Cited by 12 publications

References 19 publications

Optical biosensors based on integrated polymer light source and polymer photodiode

Optical biosensors based on integrated polymer light source and polymer photodiode

OLED-based DNA biochip for Campylobacter spp. detection in poultry meat samples

Deep blue/ultraviolet microcavity OLEDs based on solution-processed PVK:CBP blends

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