CuPc/C 60 heterojunction photodetector with near-infrared spectral response

In this article, we demonstrate a promising inline near-infrared measurement scheme for 24/7 biofilm monitoring based on cost-effective microelectromechanical system-based spectrometer technology. The shown near-infrared spectral data, acquired at a beer-canning line during a representative time span of 10 days, are analyzed by means of principal component analysis and the performance of the monitoring system and its capability to identify biofilms on its sensor surface are investigated by comparing spectral response with results of offline polymerase chain reaction measurements of smear samples. Correlations between presence of a biofilm and its thickness with scores on PC1 and PC2, respectively, were observed.

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Polymer–polymer solar cells with a near-infrared spectral response

Journal of Materials Chemistry A ◽

10.1039/c5ta01042j ◽

2015 ◽

Vol 3 (13) ◽

pp. 6756-6760 ◽

Cited By ~ 29

Author(s):

Weiwei Li ◽

Yang An ◽

Martijn M. Wienk ◽

René A. J. Janssen

Keyword(s):

Solar Cells ◽

Electron Donor ◽

Electron Acceptor ◽

Near Infrared ◽

Bulk Heterojunction ◽

Polymer Solar Cells ◽

Spectral Response ◽

Heterojunction Solar Cells ◽

Bulk Heterojunction Solar Cells ◽

Infrared Spectral

Four different thiazole-flanked diketopyrrolopyrrole-based polymers were applied as an electron acceptor in bulk heterojunction solar cells with poly(3-hexylthiophene) as an electron donor.

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Enhancing the Near-Infrared Spectral Response of Silicon Optoelectronic Devices via Up-Conversion

IEEE Transactions on Electron Devices ◽

10.1109/ted.2007.903197 ◽

2007 ◽

Vol 54 (10) ◽

pp. 2679-2684 ◽

Cited By ~ 108

Author(s):

Bryce S. Richards ◽

Avi Shalav

Keyword(s):

Near Infrared ◽

Spectral Response ◽

Optoelectronic Devices ◽

Infrared Spectral

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Nanostructure Formation in Silicon Photovoltaic Cells by Femtosecond Laser Pulses

Materials Science Forum ◽

10.4028/www.scientific.net/msf.670.118 ◽

2010 ◽

Vol 670 ◽

pp. 118-121 ◽

Cited By ~ 2

Author(s):

A.M. Taleb ◽

K.A. Al-Naimee ◽

S.F. Abdalah ◽

Riccardo Meucci ◽

F.T. Arecchi

Keyword(s):

Femtosecond Laser ◽

Room Temperature ◽

Near Infrared ◽

Spectral Response ◽

Photovoltaic Cells ◽

Laser Pulses ◽

Photovoltaic Cell ◽

Femtosecond Laser Pulses ◽

Irradiation Effect ◽

Infrared Spectral

The experimental evidence of the effect of femtosecond laser pulses on the spectral response of a Silicon photovoltaic cell is demonstrated and investigated. The response of this device is covering the visible to near infrared spectral region. The responsivity of the photovoltaic cell is enhanced from 0.18A/W (0.5A/W to 0.85 A/W) to 0.25A/W, this means that the conversion efficiency increases from about 9% to about 14% due to irradiation effect. All treatments and measurements have been done at room temperature. The observed enhancement is related to the appearing of nano-structured groves in the 700-900 nm range.

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Conversion of phycocyanobilin-binding GAF domain to biliverdin-binding domain

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424618500463 ◽

2018 ◽

Vol 22 (05) ◽

pp. 398-405 ◽

Cited By ~ 1

Author(s):

Ping-Ping Hu ◽

Jian-Yun Hou ◽

Rui Guo ◽

Su-Ping Jiang ◽

Ming Zhou ◽

...

Keyword(s):

Near Infrared ◽

Spectral Response ◽

Red Light ◽

Random Mutagenesis ◽

Ultra Violet ◽

Site Directed Mutagenesis ◽

Absorbing State ◽

Response Range ◽

Infrared Spectral ◽

Primary Amino

Cyanobacteriochromes (CBCRs) are biliprotein photoreceptors that only exist in cyanobacteria and have a broad spectral response range from ultra-violet to far-red. The red/green-type CBCRs can show red/green reversible photoconversion via a covalently bound phycocyanobilin (PCB). In recent years, several CBCRs binding with not only PCB but also biliverdin (BV) have been discovered, which raises the possibility of CBCRs being applied as optogenetic tools. Through molecular modification, we hope to engineer BV-binding CBCRs responsive to the near-infrared spectral region (650–900 nm), of which the red/green type of CBCRs are suitable resources for experimentation. Here, we use Slr1393g3 (the third GAF domain of a red/green photoswitching CBCR from Synechocystis sp. PCC 6803) as a template to perform such molecular evolution using both random mutagenesis and site-directed mutagenesis. After several rounds of random mutagenesis, we obtained several BV-binding variants of Slr1393g3. These BV-binding variants have a maximal absorbance at ̃690 nm and a fluorescence at ̃720 nm. Additionally, some of them have remarkable photochromicity between a far-red light-absorbing state and a red light-absorbing state. Based on the primary amino acid sequence and structural models, the Phe474 surrounding ring D of BV is thought as a crucial site for chromophore selectivity.

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Integrated near-infrared spectral sensing

Nature Communications ◽

10.1038/s41467-021-27662-1 ◽

2022 ◽

Vol 13 (1) ◽

Author(s):

Kaylee D. Hakkel ◽

Maurangelo Petruzzella ◽

Fang Ou ◽

Anne van Klinken ◽

Francesco Pagliano ◽

...

Keyword(s):

Near Infrared ◽

Prediction Models ◽

Spectral Response ◽

Resonant Cavity ◽

Industrial Process ◽

Chemical Information ◽

Minimal Size ◽

Spectral Reconstruction ◽

Infrared Spectral ◽

Spectral Sensing

AbstractSpectral sensing is increasingly used in applications ranging from industrial process monitoring to agriculture. Sensing is usually performed by measuring reflected or transmitted light with a spectrometer and processing the resulting spectra. However, realizing compact and mass-manufacturable spectrometers is a major challenge, particularly in the infrared spectral region where chemical information is most prominent. Here we propose a different approach to spectral sensing which dramatically simplifies the requirements on the hardware and allows the monolithic integration of the sensors. We use an array of resonant-cavity-enhanced photodetectors, each featuring a distinct spectral response in the 850-1700 nm wavelength range. We show that prediction models can be built directly using the responses of the photodetectors, despite the presence of multiple broad peaks, releasing the need for spectral reconstruction. The large etendue and responsivity allow us to demonstrate the application of an integrated near-infrared spectral sensor in relevant problems, namely milk and plastic sensing. Our results open the way to spectral sensors with minimal size, cost and complexity for industrial and consumer applications.

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On-line measurement of soil properties without direct spectral response in near infrared spectral range

Soil and Tillage Research ◽

10.1016/j.still.2013.04.004 ◽

2013 ◽

Vol 132 ◽

pp. 21-29 ◽

Cited By ~ 25

Author(s):

Omar Marín-González ◽

Boyan Kuang ◽

Mohammed Z. Quraishi ◽

Miguel Ángel Munóz-García ◽

Abdul Mounem Mouazen

Keyword(s):

Soil Properties ◽

Spectral Range ◽

Near Infrared ◽

Spectral Response ◽

Infrared Spectral Range ◽

Line Measurement ◽

Infrared Spectral ◽

On Line

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Metastructures for the Giant Enhancement of Raman Scattering in the Near Infrared Spectral Range

JETP Letters ◽

10.1134/s0021364020130081 ◽

2020 ◽

Vol 112 (1) ◽

pp. 31-36

Author(s):

V. I. Kukushkin ◽

V. E. Kirpichev ◽

E. N. Morozova ◽

V. V. Solov’ev ◽

Ya. V. Fedotova ◽

...

Keyword(s):

Raman Scattering ◽

Spectral Range ◽

Near Infrared ◽

Infrared Spectral Range ◽

Infrared Spectral

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ALD Deposited ZnO:Al Films on Mica for Flexible PDLC Devices

Nanomaterials ◽

10.3390/nano11041011 ◽

2021 ◽

Vol 11 (4) ◽

pp. 1011

Author(s):

Dimitre Z. Dimitrov ◽

Zih Fan Chen ◽

Vera Marinova ◽

Dimitrina Petrova ◽

Chih Yao Ho ◽

...

Keyword(s):

Near Infrared ◽

Atomic Layer ◽

Optical Transmittance ◽

Force Microscopy ◽

Flexible Polymer ◽

Layer Deposition ◽

Polymer Dispersed ◽

Muscovite Mica ◽

Infrared Spectral ◽

Continuous Bending

In this work, highly conductive Al-doped ZnO (AZO) films are deposited on transparent and flexible muscovite mica substrates by using the atomic layer deposition (ALD) technique. AZO-mica structures possess high optical transmittance at visible and near-infrared spectral range and retain low electric resistivity, even after continuous bending of up to 800 cycles. Structure performances after bending tests have been supported by atomic force microscopy (AFM) analysis. Based on performed optical and electrical characterizations AZO films on mica are implemented as transparent conductive electrodes in flexible polymer dispersed liquid crystal (PDLC) devices. The measured electro-optical characteristics and response time of the proposed devices reveal the higher potential of AZO-mica for future ITO-free flexible optoelectronic applications.

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Phenotypic and genetic variation of ultraviolet–visible-infrared spectral wavelengths of bovine meat

Scientific Reports ◽

10.1038/s41598-021-93457-5 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Giovanni Bittante ◽

Simone Savoia ◽

Alessio Cecchinato ◽

Sara Pegolo ◽

Andrea Albera

Keyword(s):

Meat Quality ◽

Genetic Improvement ◽

Near Infrared ◽

Infrared Region ◽

Phenotypic Variance ◽

Quality Traits ◽

Meat Quality Traits ◽

Infrared Spectral ◽

Portable Spectrometers ◽

Absorbance Spectra

AbstractSpectroscopic predictions can be used for the genetic improvement of meat quality traits in cattle. No information is however available on the genetics of meat absorbance spectra. This research investigated the phenotypic variation and the heritability of meat absorbance spectra at individual wavelengths in the ultraviolet–visible and near-infrared region (UV–Vis-NIR) obtained with portable spectrometers. Five spectra per instrument were taken on the ribeye surface of 1185 Piemontese young bulls from 93 farms (13,182 Herd-Book pedigree relatives). Linear animal model analyses of 1481 single-wavelengths from UV–Vis-NIRS and 125 from Micro-NIRS were carried out separately. In the overlapping regions, the proportions of phenotypic variance explained by batch/date of slaughter (14 ± 6% and 17 ± 7%,), rearing farm (6 ± 2% and 5 ± 3%), and the residual variances (72 ± 10% and 72 ± 5%) were similar for the UV–Vis-NIRS and Micro-NIRS, but additive genetics (7 ± 2% and 4 ± 2%) and heritability (8.3 ± 2.3% vs 5.1 ± 0.6%) were greater with the Micro-NIRS. Heritability was much greater for the visible fraction (25.2 ± 11.4%), especially the violet, blue and green colors, than for the NIR fraction (5.0 ± 8.0%). These results allow a better understanding of the possibility of using the absorbance of visible and infrared wavelengths correlated with meat quality traits for the genetic improvement in beef cattle.

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