prov:value
| - These materials can be used separately or by laminating two or more kinds of them one upon the other, for instance, by laminating a polyaniline film on ITO film. [0034] On the other hand, as a cathode material (CATHODE), there is used a metal or a compound having a low work function WfC, for instance, analkalimetal, such as silver, lead, tin, aluminum, calcium, indium, chromium, or lithium, an alk
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