A complex represented by the following Chemical Formula 1: in Chemical Formula 1, M is trivalent cobalt or trivalent chromium; A is oxygen or sulfur; Q is a diradical connecting two nitrogens; R 1 to R 10 are each independently hydrogen; halogen; (C1-C20)alkyl; (C1-C20)alkyl containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; (C2-C20)alkenyl; (C2-C20)alkenyl containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; (C1-C20)alkyl(C6-C20)aryl; (C1-C20)alkyl(C6-C20)aryl containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; (C6-C20)aryl(C1-C20)alkyl; (C6-C20)aryl(C1-C20)alkyl containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; (C1-C20)alkoxy; (C6-C30)aryloxy; formyl; (C1-C20)alkylcarbonyl; (C6-C20)arylcarbonyl; a metalloid radical of Group 14 metal substituted with hydrocarbyl; a protonated group of the following Chemical Formula 2; a protonated group of the following Chemical Formula 3; a protonated group of the following Chemical Formula 4; a protonated group of the following Chemical Formula 5; a protonated group of the following Chemical Formula 6; a protonated group of the following Chemical Formula 7; a protonated group of the following Chemical Formula 8; or a protonated group of the following Chemical Formula 9; wherein at least one or more of R 1 to R 10 are a protonated group selected from a group consisting of the following Chemical Formulas 2, 3, 4, 5, 6, 7, 8, and 9; X - is halogen anion; a (C6-C20)aryloxy anion; a (C6-C20)aryloxy anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C1-C20)alkylcarboxy anion; a (C1-C20)alkylcarboxy anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C6-C20)arylcarboxy anion; a (C6-C20)arylcarboxy anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C1-C20)alkoxy anion; a (C1-C20)alkoxy anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C1-C20)alkylcarbonate anion; a (C1-C20)alkylcarbonate anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C6-C20)arylcarbonate anion; a (C6-C20)arylcarbonate anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C1-C20)alkylsulfonate anion; a (C1-C20)alkylsulfonate anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C1-C20)alkylamido anion; a (C1-C20)alkylamido anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C6-C20)arylamido anion; a (C6-C20)arylamido anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C1-C20)alkylcarbamate anion; a (C1-C20)alkylcarbamate anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; a (C6-C20)arylcarbamate anion; or a (C6-C20)arylcarbamate anion containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; X - may be coordinated to M; Y 1 - is F -, Cl -, Br -, I -, BF 4 -, ClO 4 -, NO 3 - or PF 6 -; Y 2 2- is SO 4 2- or CO 3 2-; a is an integer obtained by adding 1 to the total number of monovalent cations included in protonated groups of R 1 to R 10; b is an integer of 1 or more, c is an integer of 0 or more, d is an integer of 0 or more, and b+c+2d=a is satisfied; Z 1 to Z 18 are each independently nitrogen or phosphorus; n is an integer of 1 to 10; m is an integer of 1 to 10; R 11 to R 16, R 21 to R 26, R 31 to R 36, R 41 to R 48, R 51 to R 57, R 61 to R 66, R 71 to R 76 and R 81 to R 86 are each independently hydrogen; (C1-C20)alkyl; (C1-C20)alkyl containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; (C2-C20)alkenyl; (C2-C20)alkenyl containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; (C1-C20)alkyl(C6-C20)aryl; (C1-C20)alkyl(C6-C20)aryl containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; (C6-C20)aryl(C1-C20)alkyl; (C6-C20)aryl(C1-C20)alkyl containing one or more selected from among halogen, nitrogen, oxygen, silicon, sulfur and phosphorus; or a metalloid radical of Group 14 metal substituted with hydrocarbyl; two of R 11 to R 16, two of R 21 to R 26, two of R 31 to R 36, two of R 41 to R 48, two of R 51 to R 57, two of R 61 to R 66, two of R 71 to R 76, and two of R 81 to R 86 may be linked with each other to thereby form a ring; and wherein alkyl, alkenyl, alkylaryl, arylalkyl, alkoxy, aryloxy, alkylcarbonyl, and arylcarbonyl of R 1 to R 10, and alkyl, alkenyl, alkylaryl and arylalkyl of R 11 to R 16, R 21 to R 26, R 31 to R 36, R 43 to R 48, R 51 to R 57, R 61 to R 66, R 71 to R 76 and R 81 to R 86 may be further substituted with any one or more selected from halogen, (C1-C20)alkyl, (C2-C20)alkenyl, (C1-C20)alkyl(C6-C20)aryl and (C6-C20)aryl(C1-C20)alkyl.