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Cheng-Liang Huang,Hung Ji Huang,Sy-Hann Chen,Yu-Siang Huang,Po-Ching Kao,Yuan-Fong Chou Chau,Hai-Pang Chiang 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.103 No.-
This study used photochemical reduction to successfully synthesize triangular silver nanoplates (TAgNPs)and silver nanodecahedrons (AgNDs) with higher light-absorption and higher light-scattering properties,respectively, for the same wavelength. To analyze the contribution of light-absorption and lightscatteringof silver nanoparticles to the localized surface plasmon resonance (LSPR) effect, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate was doped with TAgNPs or AgNDs at the same concentration(1.17 lg/cm2) and made into polymer light-emitting diodes (PLEDs). According to the current densityvoltageluminancecharacteristics and electroluminescence (EL) spectra, the enhancement factors for currentefficiency and EL intensity for AgND-containing PLEDs were found to be higher than those for PLEDwith TAgNPs by 24.9% and 138%, respectively. This shows that the metal nanoparticles with higher lightscatteringproperty can induce a relatively strong LSPR effect, which possibly gives a hint to design plasmonicphotovoltaic in future.
An Economic-Statistical Design of Moving Average Control Charts
Yu, Fong-Jung,Chin, Hsiang,Huang, Hsiao Wei The Korean Society for Quality Management 2006 The Asian Journal on Quality Vol.7 No.3
Control charts are important tools of statistical quality control. In 1956, Duncan first proposed the economic design of $\bar{x}-control$ charts to control normal process means and insure that the economic design control chart actually has a lower cost, compared with a Shewhart control chart. An moving average (MA) control chart is more effective than a Shewhart control chart in detecting small process shifts and is considered by some to be simpler to implement than the CUSUM. An economic design of MA control chart has also been proposed in 2005. The weaknesses to only the economic design are poor statistics because it dose not consider type I or type II errors and average time to signal when selecting design parameters for control chart. This paper provides a construction of an economic-statistical model to determine the optimal parameters of an MA control chart to improve economic design. A numerical example is employed to demonstrate the model's working and its sensitivity analysis is also provided.
Metal Chloride Precursor Synthesization of Cu2ZnSnS4 Solar Cell Materials
Min Yen Yeh,Yu-Fong Huang,Cheng-Liang Huang,Chyi-Da Yang,Dong-Sing Wuu,Po-Hsun Lei 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.65 No.2
Cu2ZnSnS4 (CZTS) thin films with kesterite structures were prepared by directly sol-gel synthesizingspin-coated precursors on soda-lime-glass (SLG) substrates. The CZTS precursors wereprepared by using solutions of copper (II) chloride, zinc (II) chloride, tin (IV) chloride, and thiourea. The ratio of SnCl4 in the precursors was found to play a critical role in the synthesization of CZTS. CZTS phases of SnS and SnS2 were observed in the synthesized films as prepared using precursorswith a close to stoichiometric ratio of CuCl2:ZnCl2:SnCl4:CH4N2S = 4:1:1:8, where SnCl4 was 1mol/l. The amounts of the educed SnS and SnS2 phases observed in the SEM images could bereadily reduced by decreasing the volume of SnCl4 in the mixed solution. With decreasing amountof SnCl4 from 1 mol/l, the as prepared CZTS reveals a significant improvement in its crystallineproperties. In this work, CZTS with an average absorption coefficient and an optical energy gapof over 104 cm−1 and 1.5 eV, respectively, was obtained using precursors of copper (II) chloride,zinc (II) chloride, tin (IV) chloride, and thiourea mixed in a ratio of 2:1:0.25:8, and it had goodcrystallinity revealing a Cu-poor composition.