Low-energy intense pulsed light annealing of InZnO sol-gel films via employment of a resonant absorber

2021 ◽  
Vol 119 (13) ◽  
pp. 132102
Author(s):  
Minwoo Cho ◽  
Kyeong-Youn Song ◽  
Kwan hyun Cho ◽  
Hoo-Jeong Lee
Keyword(s):  
Sol Gel ◽  
Low Energy ◽  
Intense Pulsed Light ◽  
Pulsed Light ◽  
Sol Gel Films

scholarly journals Suitability of Copper Nitride as a Wiring Ink Sintered by Low-Energy Intense Pulsed Light Irradiation

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 617 ◽  
Author(s):  
Takashi Nakamura ◽  
Hea Jeong Cheong ◽  
Masahiko Takamura ◽  
Manabu Yoshida ◽  
Sei Uemura
Keyword(s):  
Sheet Resistance ◽  
Printed Circuit Board ◽  
Decomposition Temperature ◽  
Low Energy ◽  
Intense Pulsed Light ◽  
Circuit Board ◽  
Pulsed Light ◽  
Copper Nitride ◽  
Suitable Material ◽  
Energy Irradiation

Copper nitride particles have a low decomposition temperature, they absorb light, and are oxidation-resistant, making them potentially useful for the development of novel wiring inks for printing circuit boards by means of intense pulsed light (IPL) sintering at low-energy. Here, we compared the thermal decomposition and light absorption of copper materials, including copper nitride (Cu3N), copper(I) oxide (Cu2O), or copper(II) oxide (CuO). Among the copper compounds examined, copper nitride had the second highest light absorbency and lowest decomposition temperature; therefore, we concluded that copper nitride was the most suitable material for producing a wiring ink that is sintered by means of IPL irradiation. Wiring inks containing copper nitride were compared with those of wiring inks containing copper nitride, copper(I) oxide, or copper(II) oxide, and copper conversion rate and sheet resistance were also determined. Under low-energy irradiation (8.3 J cm−2), copper nitride was converted to copper at the highest rate among the copper materials, and provided a sheet resistance of 0.506 Ω·sq−1, indicating that copper nitride is indeed a candidate material for development as a wiring ink for low-energy intense pulsed light sintering-based printed circuit board production processes.

scholarly journals Intense pulsed light (IPL) annealed sol–gel derived ZnO electron injector for the production of high efficiency inverted quantum dot light emitting devices (QLEDs)

RSC Advances ◽  
2018 ◽  
Vol 8 (64) ◽  
pp. 36632-36646 ◽  
Author(s):  
Poopathy Kathirgamanathan ◽  
Muttulingam Kumaraverl ◽  
Raghava Reddy Vanga ◽  
Seenivasagam Ravichandran
Keyword(s):  
Room Temperature ◽  
High Efficiency ◽  
Sol Gel ◽  
Intense Pulsed Light ◽  
Colloidal Quantum Dots ◽  
Zno Films ◽  
Pulsed Light ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Electron Injector

Room temperature intense pulsed light annealing (photonic annealing, pulsed forge) renders the sol–gel derived ZnO films highly conductive and hydrophobic with improved interface with the colloidal quantum dots.

scholarly journals Decontamination of Powdery Foods Using an Intense Pulsed Light (IPL) Device for Practical Application

2021 ◽  
Vol 11 (4) ◽  
pp. 1518
Author(s):  
Hee-Jeong Hwang ◽  
So-Yoon Yee ◽  
Myong-Soo Chung
Keyword(s):  
Total Energy ◽  
Water Activity ◽  
Treatment Time ◽  
Sesame Seed ◽  
Pilot Scale ◽  
Black Pepper ◽  
Intense Pulsed Light ◽  
Pulsed Light ◽  
Energy Fluence ◽  
Color Changes

Controlling microbial problems when processing seeds and powdered foods is difficult due to their low water activity, irregular surfaces, and opaqueness. Moreover, existing thermal processing can readily cause various undesirable changes in sensory properties. Intense pulsed light (IPL) can be effective in nonthermal processing, and so two xenon lamps were attached to the sides of a self-designed cyclone type of pilot-scale IPL device. Each lamp was connected to its own power supply, and the following treatment conditions were applied to four sample types: lamp DC voltage of 1800–4200 V, pulse width of 0.5–1.0 ms, frequency of 2 Hz, and treatment time of 1–5 min. This device achieved reductions of 0.45, 0.66, and 0.88 log CFU/mL for ground black pepper, red pepper, and embryo buds of rice, respectively, under a total energy fluence of 12.31 J/cm2. Meanwhile, >3-log reductions were achieved for sesame seed samples under a total energy fluence of 11.26 J/cm2. In addition, analyses of color changes, water activity, and moisture content revealed no significant differences between the control and IPL-treated samples. These findings indicate that IPL treatment may be considered a feasible sterilization method for seeds and powdered foods.

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