NOVELTY - An organic light-emitting element has light-emitting layer (5) containing aromatic compound (I) or (II).    USE - Organic light-emitting element is used as luminescent material for organic electroluminescent element (all claimed), organic light-emitting transistor, organic image pick-up element, and organic solar cell.    ADVANTAGE - The organic light-emitting element having high-definition pattern is efficiently manufactured, by a simple process.    DETAILED DESCRIPTION - An organic light-emitting element has light-emitting layer containing aromatic compound of formula (I) or (II).    Z1=group of formula (i)-(x) in which H atom is optionally substituted;    P'=pyridyl;    Q1,Q2=-S-, or -SO2-;    X1,X2=H, halo, cyano, 1-5C alkyl, 1-5C alkoxy, or 1-4C acyl;    R1,R2=H, 1-3C alkyl, 1-3C alkoxy, halo, cyano, formyl, nitro, amino, or 1-3C alkylamino;    R3,R4=H, nitro, or 6-24C aryl, 1-14C alkyl, thiophenyl, oxadiazolyl, indolyl, tetrazino, dithieno(3,2-b:2'3'-d)thiophen-1-yl, 3,2-b:2',3'-dithieno(d)thiophene dioxide 1-yl, alkyl, alkylcarbonyl, aryl carbonyloxy or amino (all optionally substituted);    or R1+R3=cyclic structure;and    or R2+R4=cyclic structure.    INDEPENDENT CLAIMS are included for the following:    (1) luminescent material precursor;    (2) organic energy conversion element, which includes aromatic compound (II);    (3) luminescent material, which comprises aromatic compound (II);    (4) substituted-aromatic compound of formula (III);    (5) substituted-sulfur-containing compound of formula (IV); and    (6) manufacture of organic light-emitting element, which involves irradiating recording light to light emitting layer containing aromatic compound (I) with luminescent material.    Z2,Z3=6-membered aryl containing carbon and/or nitrogen;    R5,R6=substituent;    n5,n6=0-4.    When Z1 forms thiazole ring, Z2 or Z3 does not form benzene ring.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic sectional view of laminated structure of organic electroluminescent element.    Substrate (1)    Anode (2)    Positive hole injection layer (3)    Positive hole transport layer (4)    Light-emitting layer (5)