TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No general preparation given. Preferred Components: The polycyclic type-compound (1) is preferably chosen from 23 polycyclic compound of formulae (7,11,17) and more preferably (19,44). The polycyclic type-compound (2) is preferably chosen from 23 polycyclic type compound of formulae (9,14,18) and more preferably (20,46). Preferred Layer: The light emitting layer contains polycyclic type-compound as host material. The light emitting layer further contains phosphorescence luminosity material chosen from ortho metalation complex of platinum, iridium and osmium. An electron injection layer containing a nitrogen-containing ring derivative, and electron carrying layer containing polycyclic-type compound are provided between light emitting layer and cathode. The light emitting layer contains organic electroluminescent element material including compound having pi-conjugated heteroacene structure crosslinked via carbon atom, nitrogen atom, oxygen atom, sulfur atom as a host material. The light emitting layer contains the organic electroluminescent element material of formula (40-47) as host material. A hole transport layer containing polycyclic-type compound is provided between light emitting layer and anode. A reducing dopant is provided in interface region of cathode and organic thin film layer.X 3-X 14=X 1, preferably N-R 1;L 3=L 1;o+p+q=2 or less;X 15-X 18=oxygen, sulfur, N-R 1or CR 2R 3;R 1-R 3=1-20C alkyl, 3-20C optionally substituted cycloalkyl, 7-24C aralkyl, 3-20C organo silyl group, 6-24C optionally substituted aromatic hydrocarbyl or 3-24C optionally substituted aromatic heterocyclic group;n=2-4;L 3=coupling group;L 1=single bond, 1-20C alkylene, 3-20C optionally substituted cycloalkylene, 2-20C optionally substituted bivalent silyl bonded with silicon atom, 6-24C bivalent aromatic hydrocarbyl or 3-24C optionally substituted monovalent or bivalent aromatic heterocyclic group connected with benzene ring (a) by carbon-carbon bond;L 2=single bond, 1-20C alkylene, 3-20C optionally substituted cycloalkylene, 2-20C optionally substituted bivalent silyl bonded with silicon atom, 6-24C bivalent aromatic hydrocarbyl or 3-24C optionally substituted bivalent aromatic heterocyclic group connected with benzene ring (c) by carbon-carbon bond;A 1=H, 3-20C optionally substituted cyclicalkyl group, 3-20C organo silyl group, 6-24C optionally substituted aromatic hydrocarbyl or 3-24C aromatic heterocyclic group connected with L 1by carbon-carbon bond;A 2=H, 3-20C optionally substituted cyclicalkyl group, 3-20C organo silyl group, 6-24C optionally substituted aromatic hydrocarbyl or 3-24C aromatic heterocyclic group connected with L 2by carbon-carbon bond;andY 1-Y 3=1-20C alkyl, 3-20C optionally substituted cycloalkyl, 1-20C alkoxy, 7-24C aralkyl, 3-20C organo silyl, 6-24C optionally substituted aromatic hydrocarbyl, or 3-24C aromatic heterocyclic group connected with benzene rings (a-c) by carbon-carbon bond.When both X 15and X 16or X 17and X 18is CR 2R 3and both L 1and L 2is 6-24C optionally substituted bivalent aromatic hydrocarbyl, L 1, L 2are not simultaneously connecting with para position with respect to benzene ring (b). When n is 2, L 3is L 2, when n is 3, L 3is 1-20C alkanetriyl group, 3-20C optionally substituted cyclic alkanetriyl group, optionally substituted trivalent aromatic heterocyclic group, 6-24C optionally substituted trivalent aromatic hydrocarbyl or 1-20C trivalent organo silyl group bonded with silicon atom, and is connected with benzene ring (c) by carbon-carbon bond by 3-24 atoms, and when n is 4, L 3is 1-20C alkane tetrayl group, 3-20C optionally substituted cyclicalkane tetrayl group, silicon atom, 6-24C optionally substituted tetravalent aromatic hydrocarbyl, or 3-24C optionally substituted aromatic heterocyclic group connected with benzene ring (c) by carbon-carbon bond. A 1,A 2,L 1-L 3do not contain a carbonyl group. When L 1and L 2is 1-20C alkyl or alkylene, A 1, A 2is H. When both X 15and X 16or X 17and X 18is CR 2R 3and both L 1and L 3is 6-24C optionally substituted bivalent, trivalent or tetravalent aromatic hydrocarbyl, L 1, L 3are not simultaneously connecting with para position with respect to benzene ring (b). When both X 15and X 16or X 17and X 18is oxygen, sulfur or CR 2R 3and both L 1and L 2is single bond and both A 1and A 2are hydrogen, benzene ring (b) has one or two of Y 2substituent, which is other than methyl or unsubstituted phenyl. The compound has 0, 1 or 2 Y 1, Y 3substituent and 0, 1, 2 or 3 Y 2substituent. When both X 3and X 4, or X 5and X 6are N-R 1, at least one of the R 1is optionally substituted 8-24C monovalent condensed-ring-aromatic-compound heterocyclic ring. When X 7and X 8, X 9and X 10, or X 11and X 12is N-R 1, at least one of the R 1is optionally substituted 8-24C monovalent condensed-ring-aromatic-compound heterocyclic ring. Y 1, Y 2and Y 3is 2 or less, preferably 0. Preferred Definitions:    B'=indan structure of formula (3c);    o+p=1;    X 1,X 14=N-R 1, oxygen or CR 2R 3;    R 1=optionally substituted condensed aromatic compound heterocyclic ring having 8-24 atoms;and    nitrogen containing compound (4)=group of formulae (21-25).    N-R 1of X 1and X 2, N-R 1of X 3, X 4, X 5and X 6, N-R 1of X 7, X 8, X 9and X 10, X 11, X 12and N-R 1of X 13and X 14in polycyclic type-compound are different.    SPECIFIC COMPOUNDS - 949 Polycyclic type-compound are disclosed for e.g. 9-(16-(9H-carbazol-9-yl)-10,20-dioxapentacyclo(11.7.0.03,11.04,9.014,19)icosa-1(13),2,4(9),5,7,11,14(19),15,17-nonaen-6-yl)-9H-carbazole of formula (I), 9-(16-(9H-carbazol-9-yl)-10,20-dioxapentacyclo(11.7.0.03,11.04,9.014,19)icosa-1(13),2,4(9),5,7,11,14(19),15,17-nonaen-8-yl)-9H-carbazole, 9-(3-(16-(9H-carbazol-9-yl)-10,20-dioxapentacyclo(11.7.0.03,11.04,9.014,19)icosa-1(13),2,4(9),5,7,11,14(19),15,17-nonaen-6-yl)phenyl)-9H-carbazole, 3-(16-(9H-carbazol-9-yl)-10,20-dioxapentacyclo(11.7.0.03,11.04,9.014,19)icosa-1(13),2,4(9),5,7,11,14(19),15,17-nonaen-6-yl)-9-phenyl-9H-carbazole and 9-(16-(8-oxatricyclo(7.4.0.02,7)trideca-1(9),2,4,6,10,12-hexaen-4-yl)-10,20-dioxapentacyclo(11.7.0.03,11.04,9.014,19)icosa-1,3(11),4(9),5,7,12,14(19),15,17-nonaen-6-yl)-9H-carbazole.    EXAMPLE - 4-Bromo-2-(4-(5-bromo-2-hydroxyphenyl)-2,5-difluorophenyl)phenol, potassium carbonate, N-methyl pyrrolidone, were mixed, stirred at 150 degrees C for 8 hours, cooled, water was added and extracted and purified, to obtain 6,16-dibromo-10,20-dioxapentacyclo(11.7.0.03,11.04,9.014,19)icosa-1,3(11),4(9),5,7,12,14(19),15,17-nonaene. 6,16-Dibromo-10,20-dioxapentacyclo(11.7.0.03,11.04,9.014,19)icosa-1,3(11),4(9),5,7,12,14(19),15,17-nonaene, carbazole, copper iodide, and trans cyclohexane 1,2-diamine, potassium phosphate, 1,4-dioxane were reacted, cooled, extracted, purified, recrystallized and dried, to obtain compound 9-(16-(9H-carbazol-9-yl)-10,20-dioxapentacyclo(11.7.0.03,11.04,9.014,19)icosa-1(13),2,4(9),5,7,11,14(19),15,17-nonaen-6-yl)-9H-carbazole (I).