Optically transparent electrode etching

Emissive spectral features were consistent with those previously reported for CdS Te (6-13) and confirmed (Roessler s correlation, (12)) that the Te concentration was <100 ppm. TheA,5x5xl mm samples had resistivities of A,2 ohm-cm (four point probe method) and were oriented with the 5x5 mm face perpendicular to the c-axis. Samples were first etched with 1 10 (v/v) Br2/MeOH and then placed in an ultrasonic cleaner to remove residual Br2. The electrolyte was either sulfide, 1M 0H /1M S2-, or polyselenide, typically 5M 0H /0.1M Se2 /0.001M Se22- short optical pathlengths (<0.1 cm) were used to make the latter essentially transparent for A >500 nm. Electrode and electrolyte preparation as well as electrochemical and optical instrumentation employed have been described previously (8). Electrolytes were magnetically stirred and blanketed under N2 during use. 

Harrison et al came to another conclusion [231,232]. They find radical cations, rt-diiners, and di-cations in their MIS device. In this device ITO was etched to form two 5 mm electrodes on the glass substrate. Onto this structure 100 nm 6T was evaporated under various conditions (see below). As insulator evaporated SiO was used. Finally, two semi-transparent gold strips were evaporated as gate electrodes. They form a right-angle with the ITO electrodes. In contrast to the above-mentioned experiment, four MIS diodes are formed in this way. With this device optical spectroscopy of the... 

A liquid crystal display in its simplest form consists of two glass plates coated on their inner surface with an electrode layer between which a liquid crystal layer about 12 jum thick is sandwiched (Fig. 7a). A voltage applied to these electrodes produces an electric field that affects the liquid crystal. The electrode layer can be homogeneous or a pattern can be etched into it so that by driving appropriate elements various pictures can be created (Fig. 7b). To observe the electro-optic effects of the liquid crystal layer at least one of the electrode plates must be transparent. If the liquid crystal layer is operated in the transmissive mode, both electrodes must be transparent. For reflective mode operation the back electrode must be a suitable reflecting layer. 

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