Chalcogenide precursor compound and method for preparing chalcogenide thin film using the same

A method for preparing a chalcogenide thin film, the method comprising the steps of:

• i) dissolving a chalcogenide precursor compound represented by Formula 1 below in organic solvent to prepare a precursor solution:
• wherein L is a ligand having a nitrogen atom with an unshared pair of electrons;
• M is a metal atom selected from the group consisting of Group II, III and IV elements;
• X is a Group VI chalcogen element;
• R is hydrogen, substituted or unsubstituted C1-C30 alkyl, substituted or unsubstituted C1-C30 alkenyl, substituted or unsubstituted C1-C30 alkynyl, substituted or unsubstituted C1-C30 alkoxy, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C6-C30 aryloxy, substituted or unsubstituted C2-C30 heteroaryl, substituted or unsubstituted C2-C30 heteroaryloxy, or substituted or unsubstituted C2-C30 heteroarylalkyl;
• a is an integer from 0 to about 2;
• and
• b is about 2 or about 3, in an organic solvent to prepare a precursor solution;
• ii) applying the precursor solution to a substrate, followed by annealing.