Design of Broadband Near-Infrared Y0.57La0.72Sc2.71 (BO3)4:Cr3+ Phosphors Based on One-Site Occupation and Its Application in NIR Light-Emitting Diodes

2021 ◽  
Author(s):  
Haiyan Wu ◽  
Lihong Jiang ◽  
Kai Li ◽  
Chengyu Li ◽  
Hongjie Zhang
Keyword(s):  
Near Infrared ◽  
Light Emitting Diodes ◽  
Agricultural Products ◽  
Light Emitting ◽  
Site Occupation ◽  
Nir Light ◽  
Non Destructive

Recently, near-infrared (NIR) phosphor converted light-emitting diodes (pc-LEDs) have attracted much attention due to its applications in non-destructive detection of the quality of agricultural products and the non-destructive monitoring of...

Applications of Visible and near-Infrared Hyperspectral Imaging for Non-Destructive Detection of the Agricultural Products

2011 ◽  
Vol 317-319 ◽  
pp. 909-914
Author(s):  
Ying Lan Jiang ◽  
Ruo Yu Zhang ◽  
Jie Yu ◽  
Wan Chao Hu ◽  
Zhang Tao Yin
Keyword(s):  
Hyperspectral Imaging ◽  
Near Infrared ◽  
Imaging System ◽  
Imaging Technique ◽  
Agricultural Products ◽  
Quality Inspection ◽  
Hyperspectral Reflectance ◽  
Imaging And Spectroscopy ◽  
Non Destructive

Agricultural products quality which included intrinsic attribute and extrinsic characteristic, closely related to the health of consumer and the exported cost. Now, imaging (machine vision) and spectrum are two main nondestructive inspection technologies to be applied. Hyperspectral imaging, a new emerging technology developed for detecting quality of the food and agricultural products in recent years, combined techniques of conventional imaging and spectroscopy to obtain both spatial and spectral information from an objective simultaneously. This paper compared the advantage and disadvantage of imaging, spectrum and hyperspectral imaging technique, and provided a description to basic principle, feature of hyperspectral imaging system and calibration of hyperspectral reflectance images. In addition, the recent advances for the application of hyperspectral imaging to agricultural products quality inspection were reviewed in other countries and China.

A highly efficient and thermally stable broadband Cr3+-activated double borate phosphor for near-infrared light-emitting diodes

2021 ◽  
Vol 9 (1) ◽  
pp. 164-172
Author(s):  
Decai Huang ◽  
Haomiao Zhu ◽  
Zhonghua Deng ◽  
Hongyi Yang ◽  
Jie Hu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Light Emitting Diodes ◽  
Agricultural Products ◽  
Infrared Light ◽  
Thermally Stable ◽  
Nondestructive Analysis ◽  
Near Infrared Light ◽  
Light Emitting ◽  
Highly Efficient

GdAl3(BO3)4:Cr3+ is used to fabricate a NIR-pc-LED that shows promise for plant lighting and applications in the nondestructive analysis of agricultural products.

Efficient polymer light-emitting diodes (PLEDs) based on chiral [Pt(C^N)(N^O)] complexes with near-infrared (NIR) luminescence and circularly polarized (CP) light

2019 ◽  
Vol 7 (44) ◽  
pp. 13743-13747 ◽  
Author(s):  
Guorui Fu ◽  
Yani He ◽  
Wentao Li ◽  
Baowen Wang ◽  
Xingqiang Lü ◽  
...  
Keyword(s):  
Near Infrared ◽  
Light Emitting Diodes ◽  
Light Emitters ◽  
Light Emitting ◽  
Circularly Polarized ◽  
Nir Light ◽  
Polymer Light Emitting Diodes ◽  
Nir Luminescence

Chiral NIR-light emitters [Pt(iqbt)(S-Ln)] (1–4) were used as dopants to produce CP-NIR-PLEDs displaying λem of 732 nm, ηMaxEQE of 0.87–0.93%, and gEL of up to 10−3.

Broadband near-infrared emission of La3Ga5GeO14:Tb3+,Cr3+ phosphors: energy transfer, persistent luminescence and application in NIR light-emitting diodes

2020 ◽  
Vol 8 (34) ◽  
pp. 11760-11770
Author(s):  
Biao Bai ◽  
Peipei Dang ◽  
Zhongli Zhu ◽  
Hongzhou Lian ◽  
Jun Lin
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Infrared Emission ◽  
Persistent Luminescence ◽  
Light Emitting ◽  
Nir Light ◽  
Near Infrared Emission

A broadband near-infrared La3Ga5GeO14:Tb3+,Cr3+ phosphor with high efficiency was achieved via design of energy transfer for NIR LEDs.

Ab initio of Broadband NIR Garnet Phosphor Ca4ZrGe3O12: Cr3+, Yb3+ for NIR pc-LEDs Applications

2022 ◽  
Author(s):  
Jinmeng Xiang ◽  
Jiming Zheng ◽  
Xiaoqi Zhao ◽  
Xue Zhou ◽  
Changheng Chen ◽  
...  
Keyword(s):  
Ab Initio ◽  
Near Infrared ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Modern Agriculture ◽  
Non Destructive ◽  
Application Prospects

Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) have outstanding application prospects in many fields such as non-destructive detection, bioimaging and modern agriculture, in which the development of NIR emitting phosphor with...

Spectrally tunable and thermally stable near-infrared luminescence in Na3Sc2(PO4)3:Cr3+ phosphor by Ga3+ co-doping for light-emitting diodes

2021 ◽  
Author(s):  
Shihai Miao ◽  
Yanjie Liang ◽  
Yan Zhang ◽  
Dongxun Chen ◽  
Shao Yan ◽  
...  
Keyword(s):  
High Power ◽  
Near Infrared ◽  
Light Emitting Diodes ◽  
Light Sources ◽  
Thermally Stable ◽  
Light Emitting ◽  
Co Doping ◽  
Nir Light ◽  
Infrared Luminescence ◽  
Promising Solution

Near-infrared (NIR) phosphor-converted light-emitting diodes (LEDs) are becoming an efficient and promising solution for high-power NIR light sources, which have shown a broad range of possible applications in the fields...

Catalyst Halogenation Enables Rapid and Efficient Polymerizations with Visible to Near-Infrared Light

2020 ◽  
Author(s):  
Alex Stafford ◽  
Dowon Ahn ◽  
Emily Raulerson ◽  
Kun-You Chung ◽  
Kaihong Sun ◽  
...  
Keyword(s):  
Near Infrared ◽  
Transient Absorption ◽  
Reaction Times ◽  
Infrared Light ◽  
Structure Property ◽  
Light Emitting ◽  
Structure Property Relationships ◽  
Nir Light ◽  
Light Intensities ◽  
Emission Quenching

Driving rapid polymerizations with visible to near-infrared (NIR) light will enable nascent technologies in the emerging fields of bio- and composite-printing. However, current photopolymerization strategies are limited by long reaction times, high light intensities, and/or large catalyst loadings. Improving efficiency remains elusive without a comprehensive, mechanistic evaluation of photocatalysis to better understand how composition relates to polymerization metrics. With this objective in mind, a series of methine- and aza-bridged boron dipyrromethene (BODIPY) derivatives were synthesized and systematically characterized to elucidate key structure-property relationships that facilitate efficient photopolymerization driven by visible to NIR light. For both BODIPY scaffolds, halogenation was shown as a general method to increase polymerization rate, quantitatively characterized using a custom real-time infrared spectroscopy setup. Furthermore, a combination of steady-state emission quenching experiments, electronic structure calculations, and ultrafast transient absorption revealed that efficient intersystem crossing to the lowest excited triplet state upon halogenation was a key mechanistic step to achieving rapid photopolymerization reactions. Unprecedented polymerization rates were achieved with extremely low light intensities (< 1 mW/cm<sup>2</sup>) and catalyst loadings (< 50 μM), exemplified by reaction completion within 60 seconds of irradiation using green, red, and NIR light-emitting diodes.

Geometrically isomeric [Ir(iqbt)(ppy)(hpa)] complexes with differential molecule orientations for efficient near-infrared (NIR) polymer light-emitting diodes (PLEDs)

2021 ◽  
Vol 9 (36) ◽  
pp. 12068-12072
Author(s):  
Wentao Li ◽  
Jiaxiang Liu ◽  
Baowen Wang ◽  
Siyu Hou ◽  
Xingqiang Lü ◽  
...  
Keyword(s):  
Near Infrared ◽  
Light Emitting Diodes ◽  
Dipole Transition ◽  
Transition Dipole ◽  
Light Emitting ◽  
Horizontal Orientation ◽  
Polymer Light Emitting Diodes

Based on geometrical isomerisation of [Ir(C^N1)(C^N2)((N^O))]-tris-heteroleptic Ir(iii)-complexes, the augmented transition dipole transition (TMD) with a preferential horizontal orientation, which is beneficial for their NIR-phosphorescence, is reported.

Ab Initio Two-sites Occupancy and Broadband Near-Infrared Emission of Cr3+ in Li2MgZrO4

2021 ◽  
Author(s):  
Xue Zhou ◽  
Jinmeng Xiang ◽  
Jiming Zheng ◽  
Xiaoqi Zhao ◽  
Hao Suo ◽  
...  
Keyword(s):  
Plant Growth ◽  
Ab Initio ◽  
Light Source ◽  
Near Infrared ◽  
Broad Band ◽  
Infrared Emission ◽  
Night Vision ◽  
Light Emitting ◽  
Non Destructive ◽  
Near Infrared Emission

Near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs) light source have great potential in non-destructive detection, promoting plant growth and night vision applications, while the discovery of a broad-band NIR phosphor still...

Sign in / Sign up

Export Citation Format

Share Document