TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The conductive substrate is transparent fluorine-doped tin oxide or indium tin oxide (indium oxide) substrate. The organic molecule comprises silane series, phosphate series, sulfate series or derivatives of phosphate or sulfate. The phosphate series comprises functional group including phosphoric acid, phosphate or hypophosphate; and the sulfate series comprises functional group including sulfuric acid, sulfate or hyposulfate. The seed layer is zinc oxide (ZnO) which is applied on conductive substrate by heat deposition, sputtering or spin coating. The base substrate is glass or metal substrate. Preferred Method: The ZnO seed layer is prepared by baking 1.10 g zinc acetate dehydrate at 180 degrees C for 1 hour, and leaving zinc acetate dehydrate in 50 ml ethanol at 60 degrees C for 30 minutes.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The organic molecule is removed after nanorods are grown, by heat treatment at 250 degrees C under oxygen atmosphere or by using sulfate mixture solution, preferably hydrogen peroxide and sulfuric acid mixture solution. In the case where organic molecule is octadecyltrichlorosilane (OTS), the organic molecule treatment is carried out by immersing conductive substrate in OTS isooctane solution for 1-2 minutes; and in the case where organic molecule is phosphate, the organic molecule treatment is carried out by immersing conductive substrate in phosphate solution dissolved in alcohol for 20-30 minutes. The method further comprises washing conductive substrate with isooctane after organic molecule treatment. The zinc acetate monomer solution for growing nanorods is prepared by drying zinc acetate dehydrate under nitrogen atmosphere, refluxing zinc acetate dehydrate in 50 ml ethanol at 60 degrees C for 2 hours, and removing remaining particles through centrifugation. The nanorods are grown to 1-2 pm by immersing conductive substrate on which ZnO seed layer is applied in zinc acetate monomer solution for greater than or equal to 24 hours. The contact area of active layer stacked on top of conductive substrate is increased by controlling density of nanorods using organic molecule treatment.