Browsing by Author "Wu, Ching-Wen"

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Hybrid PEDOT: PSS - Silicon Solar Cell Packaging Employing Ultrathin Transparent Conductive Films
(2018-01-01)
Wu, Ching-Wen
;
Li, You-Lan
;
Chiu, Chi-Lin
;
Wu, Hsin-Lung
;
Kitazawa, Hiroyuki
In this work, we demonstrate the packaging of hybrid organic - silicon solar cell mini-modules employing flexible and ultrathin transparent conductive films. The unique engineering plastic substrates are printed with high-resolution, micrometer-scaled silver meshes to achieve superior optical transmittance and low sheet resistance, offering the efficient collection of charged carriers through distributed metallic grids. The width of silver grid can be as low as 3 mu m, which is a 10 to 15 fold reduction compared to the conventional grid width used in screen printing. By systematically comparing various substrate materials and process conditions, we achieve a power conversion efficiency of 9.5% on 2x2 cm(2) mini-modules.
Influence on light-induced degradation in Cz-Si PERC cells under light soaking of variant wavelength and intensity
(2018-01-01)
Wu, Ching-Wen
;
Lee, Yen-Chun
;
Yu, Li-Chieh
;
Tsai, Min-An
;
Wu, Hung-Sen
We have carried out multiple analysis on the acceleration factors of LID for Cz-Si PERC cells, including temperatures, intensities and wavelengths at 396nmand 969nm. The recovery time of LID at 130 degrees C under 1 SUN shrinks down to 4 hrs and the maximum degradation in Pmax is less than 3 % due the elimination of B-O LID under high carrier-injection. However, it seems that higher intensities couldn't stop the second degradation from happening, indicating the formation of other defects. Therefore, we employ LED light source of different wavelengths and obtain that both maximum degradation of Pmax are quite different. The consequence implies that behavior of LID might be originated from the particular position (penetration depth) where carriers are located.
Localised bullous eruptions after extravasation of normal saline in the forearm during left ventricular device-assisted surgery
(2013-03-01)
Lee, Chih-Hsien
;
Chang, Cheng-Hsi
;
Wu, Ching-Wen
;
Wei, Jeng
;
Tsai, Yi-Ting
Peripheral infusion of intravenous agents is a daily routine in hospitals. Extravasation is an unintended complication associated with intravenous infusion where accidental injection or leakage of fluid occurs into the perivascular or subcutaneous space. Extravasation is fairly common but is usually without serious consequences. This has led clinicians to underestimate the potentially serious consequences of extravasation. Extravasation injury results from a combination of factors, including cytotoxicity of the solution, osmolality, vasoconstrictor effects, infusion pressure and other factors. We describe a case of upper extremity localised bullous eruptions resulting from the pressurised infusion of crystalloid solutions through an intravenous catheter, placed in the operating room during left ventricular device-assisted surgery. Peri-operative management of acute localised bullous eruptions requires surveillance for unforeseen consequences. Early recognition, diagnosis and intervention averted potential complications and morbidity.