III-nitride light-emitting diode with embedded photonic crystals

2013 ◽  
Vol 102 (18) ◽  
pp. 181117 ◽  
Author(s):  
K. H. Li ◽  
K. Y. Zang ◽  
S. J. Chua ◽  
H. W. Choi
Keyword(s):  
Photonic Crystals ◽  
Light Emitting Diode ◽  
Light Emitting

Organic Light-Emitting Diode Microcavities from Transparent Conducting Metal Oxide Photonic Crystals

Nano Letters ◽  
2011 ◽  
Vol 11 (4) ◽  
pp. 1457-1462 ◽  
Author(s):  
Daniel P. Puzzo ◽  
Michael G. Helander ◽  
Paul G. O’Brien ◽  
Zhibin Wang ◽  
Navid Soheilnia ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Metal Oxide ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Transparent Conducting

Metalloporphyrins into Mesoporous Photonic Crystals: Towards Nanostructured Sensing Devices

2019 ◽  
Author(s):  
Rolando M. Caraballo ◽  
Diego Onna ◽  
Nicolás López Abdala ◽  
Galo J.A.A. Soler-Illia ◽  
Mariana Hamer
Keyword(s):  
Photonic Crystals ◽  
Hybrid Material ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Optical Filters ◽  
Spectral Window ◽  
Light Emitting ◽  
Future Design ◽  
Mesoporous Oxide ◽  
Specific Reactivity

<p>Metalloporphyrins are molecules capable of optically sensing targets due to their specific reactivity. Shifts in metalloporphyrins spectra are usually in the order of 30 nm, requiring a spectrophotometer for transducing the analyte concentration. Mesoporous oxide thin films photonic crystals (PC) act as optical filters, while their pores can host molecular moieties. In this work used a metalloporphyrin, Mn<sup>III</sup> meso-tetra(N-methyl-4-pyridyl) porphyrin (MP), to add a recognition functionality to a PC and, at the same time, retain their pore network, in order to develop a versatile and portable sensing device for volatile amines. The hybrid material MP@PC was prepared by immersion of the PC, synthesized from two mesoporous oxides with different refractive index, in an MP solution. The system was characterized by UV-Vis absorption and FTIR spectroscopies, and SEM microscopy. Sensing of small molecules was tested using ethylenediamine (EDA) as a volatile amine model, showing an absorbance increase in the PC spectral window with promising analytical parameters. The hybrid material presents enhanced sensing capabilities compared to MP or PC alone. A prototype device was built, aiming for a future design of simple, low-cost equipment, with a light emitting diode and a light-dependent resistor, including the MP@PC sensor. The device is capable of sensing with only 1.52 μg of MP on a 1 cm<sup>2</sup> glass slide and it is easily prepared and showed a very small detection limit.</p>

Enhanced optical power of GaN-based light-emitting diode with compound photonic crystals by multiple-exposure nanosphere-lens lithography

2014 ◽  
Vol 105 (1) ◽  
pp. 013108 ◽  
Author(s):  
Yonghui Zhang ◽  
Tongbo Wei ◽  
Zhuo Xiong ◽  
Liang Shang ◽  
Yingdong Tian ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Light Emitting Diode ◽  
Optical Power ◽  
Multiple Exposure ◽  
Light Emitting

Interactions of Diffraction Modes Contributed From Surface Photonic Crystals and Nanoholes in a GaN-Based Light-Emitting Diode

2011 ◽  
Vol 29 (24) ◽  
pp. 3772-3776 ◽  
Author(s):  
Szu-Chieh Wang ◽  
Yun-Wei Cheng ◽  
Yu-Feng Yin ◽  
Liang-Yi Chen ◽  
Liang-Yu Su ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Light Emitting Diode ◽  
Light Emitting

Metalloporphyrins into Mesoporous Photonic Crystals: Towards Nanostructured Sensing Devices

2019 ◽  
Author(s):  
Rolando M. Caraballo ◽  
Diego Onna ◽  
Nicolás López Abdala ◽  
Galo J.A.A. Soler-Illia ◽  
Mariana Hamer
Keyword(s):  
Photonic Crystals ◽  
Hybrid Material ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Optical Filters ◽  
Spectral Window ◽  
Light Emitting ◽  
Future Design ◽  
Mesoporous Oxide ◽  
Specific Reactivity

<p>Metalloporphyrins are molecules capable of optically sensing targets due to their specific reactivity. Shifts in metalloporphyrins spectra are usually in the order of 30 nm, requiring a spectrophotometer for transducing the analyte concentration. Mesoporous oxide thin films photonic crystals (PC) act as optical filters, while their pores can host molecular moieties. In this work used a metalloporphyrin, Mn<sup>III</sup> meso-tetra(N-methyl-4-pyridyl) porphyrin (MP), to add a recognition functionality to a PC and, at the same time, retain their pore network, in order to develop a versatile and portable sensing device for volatile amines. The hybrid material MP@PC was prepared by immersion of the PC, synthesized from two mesoporous oxides with different refractive index, in an MP solution. The system was characterized by UV-Vis absorption and FTIR spectroscopies, and SEM microscopy. Sensing of small molecules was tested using ethylenediamine (EDA) as a volatile amine model, showing an absorbance increase in the PC spectral window with promising analytical parameters. The hybrid material presents enhanced sensing capabilities compared to MP or PC alone. A prototype device was built, aiming for a future design of simple, low-cost equipment, with a light emitting diode and a light-dependent resistor, including the MP@PC sensor. The device is capable of sensing with only 1.52 μg of MP on a 1 cm<sup>2</sup> glass slide and it is easily prepared and showed a very small detection limit.</p>

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