prov:value
| - Thus the electron-injecting layer may comprise, for example, a low work function metal such as calcium or barium or, more generally, any early transition metal, lanthanide or alkaline earth or metallic compound (for example carbide, nitride, boride, fluoride) thereof, or an alloy (including, for example, aluminium or magnesium) or a conducting polymer or a doped semiconductor and, as mentioned abo
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