TECHNOLOGY FOCUS - ELECTRONICS - Preferred Device: The electronic device further comprises a second electron transport layer disposed between the active layer and the first electrode, where the second electron transport layer is disposed between the first electron transport layer and the first electrode, or the second electron transport layer is disposed between the active layer and the first electron transport layer; and a hole transport layer disposed between the active layer and the second electrode. The active layer comprises an active layer of a thin-film transistor, an active layer of a solar cell or a light-emitting material layer of an organic light-emitting diode.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The material of the second electron transport layer comprises an inorganic oxide. The inorganic oxide comprises zinc oxide, titanium oxide or indium tin oxide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The functional main-chain having the conjugated structure comprises benzene, thiophene, aniline, furan, phenyl vinylene, fluorine and/or its a copolymer. The first ionic group comprises a cationic group containing nitrogen. The functional main-chain comprises aromatics with an alkyl chain, aromatics with fluorine-contained groups, aromatics with cross-linkable groups, aliphatics with an alkyl chain, aliphatics with fluorine-contained groups, or aliphatics with cross-linkable groups. The second ionic group comprises an anionic group.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The conjugated polyelectrolyte of formula (I), (II), (III) or A'3-R2-M+ (preferably 13 conjugated polyelectrolytes as given in specification e.g. conjugated polyelectrolyte of formula (IV)). The functional organic molecule comprises compound of formula (V) ad (VI).A1=main-chain having conjugated double bonds or conjugated triple bonds;A2=main-chain having conjugated double bonds or conjugated triple bonds;R1+=cationic group;X-=anion;m=3-18;n=2-1000;y=2-1000;A'2=aromatic main-chain or aliphatic main-chain;R2-=anionic group;M+=cation. EXAMPLE - No suitable example given.