http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Soft-chemistry Based Fabrication of Gallium Nitride Nanoparticles
Yi Chen,Mohammad Maniruzzaman1,김재환 한국정밀공학회 2011 International Journal of Precision Engineering and Vol.12 No.3
Gallium nitride (GaN) nanoparticles were fabricated with two different fabrication processes based on soft-chemistry methods, and the results were compared. Before fabricating GaN, gallium oxide peroxide (GaO(OH)) nanorods or amorphous gallium oxide (Ga2O3) particles were fabricated. For the first method, the gallium nitride (Ga(NO3)3) was dissolved into the nitric acid and adjusted pH to approximately 7. The solid-sol was converted to Ga2O3 by heating at 400 °C for 4 h. The Ga2O3 was converted to GaN in a tube furnace at 900 °C for 1 h with ammonia flow. The synthesized GaN has spherical crystalline structure. For the second method, Ga(NO3)3 was dissolved in deionized water and adjusted pH to 5 and 7 using potassium hydroxide. Well-defined and uniform diameter (approximately 200 nm) and length (approximately 1000 nm) of GaO(OH) nanorods were fabricated. For the pH 7 case, the length of the nanorods became approximately 500 nm. The nanorods became a spherical shape after conversion. X-ray diffraction patterns of the GaN nanoparticles showed a wurtzite structural characteristic.
Maniruzzaman, Md.,Rahman, M.A.,Jeong, K.,Nam, H.s.,Lee, J. Pergamon Press 2014 RENEWABLE ENERGY Vol.71 No.-
A MoO<SUB>3</SUB>/Au/MoO<SUB>3</SUB> structure with a protective barrier Al<SUB>2</SUB>O<SUB>3</SUB> was developed to suppress the reactions between MoO<SUB>3</SUB> and the PEDOT:PSS film in organic solar cells (OSCs). Though the maximum optical transmittance of this structure was 66% at 550 nm wavelength, the power conversion efficiency of a MoO<SUB>3</SUB>/Au/MoO<SUB>3</SUB>/Al<SUB>2</SUB>O<SUB>3</SUB>/PEDOT:PSS based OSCs was 2.77%, comparable to the 2.89% of an ITO-based OSCs. The introduction of a very thin Al<SUB>2</SUB>O<SUB>3</SUB> layer between the MoO<SUB>3</SUB> and the acidic PEDOT:PSS film effectively protected the MoO<SUB>3</SUB> from the acidic and water dispersed PEDOT:PSS film, increasing the J<SUB>sc</SUB>, V<SUB>oc</SUB> and FF of the structure above those of the MoO<SUB>3</SUB>/Au/MoO<SUB>3</SUB>/PEDOT:PSS structure. The Al<SUB>2</SUB>O<SUB>3</SUB> (1 nm) introduced to the MoO<SUB>3</SUB>/Au/MoO<SUB>3</SUB> structure improved J<SUB>sc</SUB> because it suppressed the reactions between MoO<SUB>3</SUB> and PEDOT:PSS and lowered the work function of the PEDOT:PSS film. The MoO<SUB>3</SUB>/Au/MoO<SUB>3</SUB>/Al<SUB>2</SUB>O<SUB>3</SUB> electrode was shown to be a promising replacement of ITO for use in flexible optoelectronic devices.
Titanium Dioxide Sol-gel Schottky Diodes and Effect of Titanium Dioxide Nanoparticle
Maniruzzaman, Mohammad,Zhai, Lindong,Mun, Seongcheol,Kim, Jaehwan The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.6
This paper reports the effect of Titanium dioxide (TiO<sub>2</sub>) nanoparticles on a TiO<sub>2</sub> sol-gel Schottky diode. TiO<sub>2</sub> nanoparticles were blended with TiO<sub>2</sub> sol-gel to fabricate the Schottky diode. TiO<sub>2</sub> nanoparticles showed strong anatase and rutile X-ray diffraction peaks. However, the mixture of TiO<sub>2</sub> sol-gel and TiO<sub>2</sub> nanoparticles exhibited no anatase and rutile peaks. The forward current of the Schottky diode drastically increased as the concentration of TiO<sub>2</sub> nanoparticles increased up to 10 wt. % and decreased after that. The possible conduction mechanism is more likely space charge limited conduction.
Indium tin oxide-free PEDOT:PSS/SAM/MoO3/Au/MoO3 multilayer electrodes for organic solar cells.
Maniruzzaman, Md,Lim, Chae Hwi,Yang, Kiyeul,Lee, Chiyoung,Nam, Ho-Seok,Lee, Jaegab American Scientific Publishers 2014 Journal of Nanoscience and Nanotechnology Vol.14 No.10
<P>A MoO3/Au/MoO3 (MAM) tri-layer structure was developed as a transparent, low-resistance anode for use in organic solar cells. Transmittance was maximized at 82% using symmetric bottom and top MoO3 layers (each of thickness 30 nm) either side of a 12 nm Au layer. Low sheet resistance also resulted (7.4 ohm per square). The series resistance and optical transmission of devices employing these structures as anodes were tailored by varying the thickness of the top MoO3 layer. Dissolution of the top MoO3 layer in</P>
Titanium Dioxide Sol-gel Schottky Diodes and Effect of Titanium Dioxide Nanoparticle
Mohammad Maniruzzaman,Lindong Zhai,Seongcheol Mun,Jaehwan Kim 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.6
This paper reports the effect of Titanium dioxide (TiO₂) nanoparticles on a TiO₂ sol-gel Schottky diode. TiO₂ nanoparticles were blended with TiO₂ sol-gel to fabricate the Schottky diode. TiO₂ nanoparticles showed strong anatase and rutile X-ray diffraction peaks. However, the mixture of TiO₂ sol-gel and TiO₂ nanoparticles exhibited no anatase and rutile peaks. The forward current of the Schottky diode drastically increased as the concentration of TiO₂ nanoparticles increased up to 10 wt. % and decreased after that. The possible conduction mechanism is more likely space charge limited conduction.