TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic dyestuff using multi-heterocycle derivative as conjugated unit is any one of the following chemical structural Formulas I-VII. Moreover, the organic dyestuff using multi-heterocycle derivative as conjugated unit comprises a conductive layer (2), a light absorbing layer (3), a reduction layer (6) and a counter electrode (7) orderly connected between two transparent stratum basales (1); the light absorbing layer (3) is composed of a semiconductor nano-particle layer (4) and a dyestuff layer (5); the semiconductor nano-particle layer (4) is connected to the conductive layer (2), the dyestuff layer (5) is connected to the reduction layer (6); the transparent stratum basale (1) is glass basale or plastic; the plastic is any one of polyethylene glycol terephthalate, polycarbonate, polypropylene, polyimide, triacetylcellulose, and polyether sulfone; the conductive layer (2) is composed of any one of tin indium oxide, tin fluoride, zinc oxide (ZnO)-gallium oxide (Ga2O3), ZnO-aluminum oxide (Al2O3), tinbase oxide, tin antimony oxide, and zinc oxide; the semiconductor nano-particle of the semiconductor nano-particle layer (4) is any one of silicon (Si), titanium oxide (TiO2), tin oxide (SnO2), ZnO, tungsten oxide (WO3), niobium oxide (Nb2O5) and titanium strontium oxide (TiSrO3), average diameter of the semiconductor nano-particle is greater than 0 nm and is less than or equal to 50 nm; the dyestuff layer (5) is composed of the organic dyestuff; the electrolytical layer (6) is composed of one or more iodine/iodized salt electrolyte, ionic liquid and organic hole mobile material and inorganic hole mobile material; the ionic liquid comprises anion and cation, where the anion is selected from: iodine (I- ), bromine (Br- ), chlorine (Cl- ), (N(CN)2)- , (N(SO2CF3)2)- , (PF6)- , (BF4)- , (NO3)- , (C(CN)3)- , (B(CN)4)- , (CF3COO)- , (ClO4)- , (BF3CF3)- , (CF3SO3)- , (CF3F2SO3)- , (CH3H2SO3)- , ((CF3SO2)2N)- , ((C2H5SO2)2N)- , ((CF3SO2)3C)- , ((C2F5SO2)3C)- , ((FSO2)3C)- , (CH3CH2OSO3)- , (CF3C(O)O)- , (CF3CF2C(O)O)- , (CH3CH2C(O)O)- , (CH3C(O)O)- , (P(C2H5)3F3)- , (P(CF3)3F3)- , (P(C2H4H)(CF3)2F3)- , (P(C2F3H2)3F3)- , (P(C2F5)(CF3)2F3)- , (P(CF3)3F3)- (P(C6H5)3F3)- , (P(C3H7)3F3)- , (P(C4H9)3F3)- , (P(C2H5)2F4)- , ((C2H5)2P(O)O)- , ((C2H5)2P(O)O2)2- ((PC6H5)2F4)- , ((CF3)2P(O)O)- , ((CH3)2P(O)O)- , ((C4H9)2P(O)O)- , (CF3P(O)O2)2- , (CH3P(O)O2)2- , ((CH3O)2P(O)O)- , (BF2(C2F5)2)- , (BF3(C2F5) )- , (BF2(CF3)2)- , (B(C2F5)4)- , (BF3(CN)2)- , (BF2(CN)2)- , (B(CF3)4)- , (B(OCH3)4)- , (B(OCH3)2(C2H5) )- , (B(O2C2H4)2)- , (B(O2C2H2)2)- , (B(O2CH4)2)- , (N(CF3)2)- , (AlCl4)- , and (SiF6)- ; the cation is selected from: Formulas i-ix; the organic hole mobile material is 2,2',7,7'-quadruple(N,N'-di-p-methoxy-diphenylamine)-9,9'-spirobiindene or other organic P-type semiconductor; the counter electrode (7) is composed of one or more of platinum (Pt), gold (Au), nickel (Ni), copper (Cu), silver (Ag), indium (In), ruthenium (Ru), palladium (Pd), rhodium (Rh), iridium (Ir), osmium (Os), carbon (C) and conducting polymer; the conducting polymer is any one or more of polyaniline, polypyrrole, polythiophene, polyphenylacetylene and polyether.