TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: The organic material layer includes a photoactive layer including (I) as an electron donor and an electron acceptor; and electron-transport layer and hole-transport layer including (I). Preferred Method: The organic layer is formed by solution coating method.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No preparation method is given. Preferred Definitions:    A1, A2 = phenyl, naphthyl or anthracenyl (all optionally substituted).    SPECIFIC COMPOUNDS - 18 Compounds (I) are specifically claimed, e.g. 2-(5-(7-(4-diphenylamino-phenyl)-benzo(1,2,5)thiadiazol-4-yl)-thiophen-2-ylmethylene)-malononitrile (Ia), 2-(5-(7-(9-phenyl-9H-carbazol-3-yl)-benzo(1,2,5)thiadiazol-4-yl)-thiophen-2-ylmethylene)-malononitrile, 2-(5-(7-(4-carbazol-9-yl-phenyl)-benzo(1,2,5)thiadiazol-4-yl)-thiophen-2-ylmethylene)-malononitrile, 2-(5-(7-(4-diphenylamino-phenyl)-benzo(1,2,5)thiadiazol-4-yl)-thieno(3,2-b)thiophen-2-ylmethylene)-malononitrile and 2-(5-(7-(9-phenyl-9H-carbazol-3-yl)-benzo(1,2,5)thiadiazol-4-yl)-thieno(3,2-b)thiophen-2-ylmethylene)-malononitrile.    EXAMPLE - 3 g 4,7-Dibromobenzo(c)(1,2,5)thiadiazole and 1.6 g 5-formylthiophene 2-boronic acid were dissolved in 10 ml tetrahydrofuran, then 5 ml 2M potassium carbonate solution and catalytic amount of tetrakis(triphenylphosphine)palladium(0) were added to the obtained solution, reacted under reflux condition, filtered, the organic solvent was removed and purified by column chromatography to obtain 5-(7-bromobenzo(c)(1,2,5)thiadiazol-4-yl)thiophene-2-carbaldehyde. Then 5-(7-bromobenzo(c)(1,2,5)thiadiazol-4-yl)thiophene-2-carbaldehyde was subjected to Suzuki coupling with 4-(diphenylamino)phenylboronic acid to obtain 5-(7-(4-(diphenylamino)phenyl)benzo(c)(1,2,5)thiadiazol-4-yl)thiophene-2-carbaldehyde. Then 5-(7-(4-(diphenylamino)phenyl)benzo(c)(1,2,5)thiadiazol-4-yl)thiophene-2-carbaldehyde was dissolved in toluene, reacted with malononitrile in presence of aluminum oxide and purified to obtain 2-(5-(7-(4-diphenylamino-phenyl)-benzo(1,2,5)thiadiazol-4-yl)-thiophen-2-ylmethylene)-malononitrile with 89% yield.