TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: The solar cell module consists of a solar cell element (3). The solar cell element contains a light guide (2) having a light-emission surface (2b) and a light-incident surface (2a). Preferred Process: The solar cell element generates an electric power, when light emitted from the light emission surface of light guide reaches the light incidence surface. The incident light from the light incidence surface is absorbed by the isoquinoline derivative.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (disclosed): The isoquinoline derivative is prepared by reacting 3-oxatricyclo(7.3.1.05,13)trideca-1(13),5,7,9,11-pentaene derivative of formula (III) and amine-containing compound of formula (IV). Preferred Definitions:    R1,R2=H, 1-18C alkyl, alkoxy, 6-10C aryl, or aryloxy;and    R3=H or 6-18C alkyl.    SPECIFIC COMPOUNDS - 6 Isoquinoline derivatives e.g. 39,42,62,63-tetrakis(4-dodecylphenoxy)-22,23,28,29,52,53,58,59-octakis((2-ethylhexyl)oxy)-5,16,35, 46-tetraazaheptadecacyclo(54.0.4.27,10.211,14.02,49.04,47.06,46.08,44.09,41.012,40.013,37.016,36.017,34.019,32.020,25.026,31.050,55)tetrahexaconta-1(56),2,4(47),5,7,9,11,13,17(34),18,20(25),21,23,26(31),27,29,32,35,37,39,41,43,48,50(55),51,53,57,59,61, 63-triacontaene-15,45-dione of formula (V), 39,42,62,63-tetrakis(4-dodecylphenoxy)-22,23,28,29,52,53,58,59-octakis((2-ethylhexyl)oxy)-5,16,35,46-tetraazaheptadecacyclo(54.0.4.27,10.211,14.02,49.04,47.05,45.08,44.09,41.012,40.013,37.016,36.017,34.019,32.020,25.026,31.050,55)tetrahexaconta-1(56),2,4(47),7(64),8(44),9(41),10(63),11(62),12(40),13(37),14(61),17(34),18,20(25),21,23,26(31),27,29,32,35,38,42,48,50(55),51,53,57,59-nonacosaene-6,15-dione, 22,23,28,29,52,53,58,59-octakis(cyclohexyloxy)-39,42,62,63-tetrakis(4-dodecylphenoxy)-5,16,35,46-tetraazaheptadecacyclo(54.0.4.27,10.211,14.02,49.04,47.06,46.08,44.09,41.012,40.013,37.016,36.017,34.019,32.020,25.026,31.050,55)tetrahexaconta-1(56),2,4(47),5,7,9,11,13,17(34),18,20(25),21,23,26(31),27,29,32,35,37,39,41,43,48,50(55),51,53,57,59,61,63-triacontaene-15,45-dione dodecane, 22,23,28,29,52,53,58,59-octakis(cyclohexyloxy)-39,42,62,63-tetrakis(4-dodecylphenoxy)-5,16,35,46-tetraazaheptadecacyclo(54.0.4.27,10.211,14.02,49.04,47.05,45.08,44.09,41.012,40.013,37.016,36.017,34.019,32.020,25.026,31.050,55)tetrahexaconta-1(56),2,4(47),7(64),8(44),9(41),10(63),11(62),12(40),13(37),14(61),17(34),18,20(25),21,23,26(31),27,29,32,35,38,42,45,48,50(55),51,53,57,59-triacontaene-6,15-dione, and 30,33,60,64-tetrakis(4-dodecylphenoxy)-13,14,19,20,43,44,49,50-octamethoxy-7,26,37,56-tetraazaheptadecacyclo(33.25.2.22,5.03,31.04,28.06,26.08,25.010,23.011,16.017,22.032,61.036,56.038,55.040,53.041,46.047,52.058,62)tetrahexaconta-1(60),2(64),3(31),4(28),5(63),6,8(25),9,11(16),12,14,17(22),18,20,23,29,32(61),33,35(62),36,38(55),39,41(46),42,44,47(52),48,50,53,58-triacontaene-27,57-dione are disclosed.    EXAMPLE - 0.75 g (2,3-Dibenzophenone imine-6,7,10,11-tetrakis(2-ethylhexyloxy)triphenylene), 0.16 g pyrazine, 16 g phenol, and 16 mL toluene were added to 100 mL flask. 16 g Phenol was further added to the reaction liquid, and heated and reacted at 145 degrees C for 24 hours. The reacted liquid was cooled to room temperature. 160 mL Methanol was added to the cooled liquid and the liquid was precipitated, to separate the crystals. The precipitate was filtered, and dissolved in 25 mL dichloromethane. The filtrate was passed through silica gel and purified, to obtain isoquinoline derivative.