TECHNOLOGY FOCUS - ELECTRONICS - Preferred Component: The solar cell module has solar cell element (3), and light guide (2) having light incidence surface (2a) and light emission surface (2b) having area less than the light incidence surface and containing perylene derivative (I). The incident light from the light incidence surface is absorbed into the perylene derivative (I), and provides the light emitted from the light emission surface of the light guide into the solar cell element, and generates electric power.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Disclosed): Aromatic compound of formula (VII) is reacted with hydroxyl group-containing compound of formula (VIII) in presence of solvent, to obtain perylene derivative of formula (III). Preferred Composition: The perylene derivative (I) is preferably of formulae (IV)-(VI).R1=H or alkyl, preferably H or 6-18C alkyl;A1,Ar2=Ar10;Z=R10, in which at least one of Z is alkenyl, alkynyl, aryl, alkyl carbonylamino, group (vi) or group (vii);andAr1',Ar2'=group (i), (ii) or (iii). Preferred Definitions:    R11-R13,R21,R22=H or 6-18C alkyl.    SPECIFIC COMPOUNDS - 35 Perylene derivatives are disclosed e.g. 22,25,44,48-tetrakis(4-dodecylphenoxy)-7,18,29,40-tetraazatridecacyclo(25.17.2.22,5.03,23.04,20.06,18.08,17.010,15.024,45.028,40.030,39.032,37.042,46)octatetraconta-1(45),2,4,6,8,10(15),11,13,16,20,22,24,26,28,30,32(37),33,35,38,42(46),43,47-docosaene-19,41-dione of formula (Ia), 22,25,44,48-tetrakis(4-dodecylphenoxy)-7,18,29,40-tetraazatridecacyclo(25.17.2.22,5.03,23.04,20.06,18.08,17.010,15.024,45.029,41.030,39.032,37.042,46)octatetraconta-1(45),2,4,6,8,10(15),11,13,16,20,22,24,26,30,32(37),33,35,38,40,42(46),43,47-docosaene-19,28-dione, 26,29,52,56-tetrakis(4-dodecylphenoxy)-7,22,33,48-tetraazapentadecacyclo(29.21.2.22,5.03,27.04,24.06,22.08,21.010,19.012,17.028,53.032,48.034,47.036,45.038,43.050,54)hexapentaconta-1(53),2,4,6,8,10(19),11,13,15,17,20,24,26,28,30,32,34,36(45),37,39,41,43,46,50(54),51,55-hexacosaene-23,49-dione, 26,29,52,56-tetrakis(4-dodecylphenoxy)-7,22,33,48-tetraazapentadecacyclo(29.21.2.22,5.03,27.04,24.06,22.08,21.010,19.012,17.028,53.033,49.034,47.036,45.038,43.050,54)hexapentaconta-1(53),2,4,6,8,10(19),11,13,15,17,20,24,26,28,30,34,36(45),37,39,41,43,46,48,50(54),51,55-hexacosaene-23,32-dione and 22,25,44,48-tetrakis(4-dodecylphenoxy)-7,18,29,40-tetraazatridecacyclo(25.17.2.22,5.03,23.04,20.06,18.08,17.09,14.024,45.028,40.030,39.031,36.042,46)octatetraconta-1(45),2,4,6,8(17),9(14),10,12,15,20,22,24,26,28,30,32,34,36,38,42(46),43,47-docosaene-19,41-dione.    EXAMPLE - 22,25,44,48-Tetrachloro-7,18,29,40-tetraazatridecacyclo(25.17.2.22,5.03,23.04,20.06,18.08,17.010,15.024,45.028,40.030,39.032,37.042,46)octatetraconta-1(45),2,4,6,8,10(15),11,13,16,20,22,24,26,28,30,32(37),33,35,38,42(46),43,47-docosaene-19,41-dione and potassium carbonate were mixed with N-methylpyrrolidone, heated and reacted at 140 degrees C for 24 hours. The reaction liquid was cooled to room temperature, 5 vol.% aqueous hydrochloric acid was added into the cooled reaction solution to precipitate crystal, and filtered. The obtained slurry was washed using water and methanol, and filtered. The obtained crystal was dissolved in methylene chloride, concentrated and filtered. The obtained residue was purified by silica gel column chromatography using mixed solvent containing methylene chloride and n-hexane in the volume ratio of 6:4. The fraction containing 22,25,44,48-tetrakis(4-dodecylphenoxy)-7,18,29,40-tetraazatridecacyclo(25.17.2.22,5.03,23.04,20.06,18.08,17.010,15.024,45.028,40.030,39.032,37.042,46)octatetraconta-1(45),2,4,6,8,10(15),11,13,16,20,22,24,26,28,30,32(37),33,35,38,42(46),43,47-docosaene-19,41-dione was separated, and the obtained fraction was dissolved in methylene chloride. Activated carbon was added into resultant mixture, stirred, and filtered. N-hexane was added into the obtained filtrate, concentrated, and dried the concentrate under reduced pressure, to obtain 22,25,44,48-tetrakis(4-dodecylphenoxy)-7,18,29,40-tetraazatridecacyclo(25.17.2.22,5.03,23.04,20.06,18.08,17.010,15.024,45.028,40.030,39.032,37.042,46)octatetraconta-1(45),2,4,6,8,10(15),11,13,16,20,22,24,26,28,30,32(37),33,35,38,42(46),43,47-docosaene-19,41-dione having light absorption peak wavelength 680 nm.