We have designed and fabricated the low-polarizing X-plate to increase the luminous throughput for
LED projector. We calculate reflectivity characteristic of X-plate as a function of the wavelength at
different angles of incidence from air of unpolarized light. A new way to design filter to control the
title effect of thin film filters. The wavelength shift of the new design for reflected red filter and
reflected blue filter at the angle of 45° ± 8° is 16 nm and 14 nm, respectively.
Nb doped TiO<sub>2</sub> (TNO) is a promising transparent conducting oxide suitable for many applications such as in solar cells,
OLEDs, LEDs, FPDs, touch panels, etc. TNO thin film was deposited on an unheated glass substrate by pulsed direct
current (DC) magnetron co-sputtering. After annealing in a vacuum (<9×10<sup>-6</sup> Torr) at 370° for 10 minutes, the film
crystallized into a polycrystalline anatase TiO<sub>2</sub> structure, the resistivity decreased to 4.5×10<sup>-4</sup> Ω-cm and the average
transmittance increased to above 70% in the visible light region. The influence of annealing on the TNO
amorphous-to-anatase phase transition, decrease in the resistivity and increase in the average transmittance will be
The well-known indium-tin-oxide is not suitable for solar cell, because of the chemical reduction, even
without any hydrogen dilution. The inexpensive and non-toxic of transparent conducting Aluminum and
Gallium doped ZnO (AZO and GZO) thin films have been investigated for the substitutes for the
indium-tin-oxide thin films. AZO performs high transmittance at visible region, however, higher resistance
than GZO. In this study, AZO and GZO composed film (GAZO) will be fabricated using DC magnetron
co-sputtering deposition system to achieve lower resistance than AZO and higher transmittance than GZO.
The optical and electric properties of different thickness of GAZO such as transmittance, reflection, carrier
concentration, Hall mobility, and resistivity will be measured and analyzed.