TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: Component (B) comprises compound(s) of formula (I) and/or (II).Preferred (I) are of formula (III)-(XXXVIII), e.g. (VI) or (XX); preferred (II) are of formula (XXXIX)-(LVIII), e.g. (XXXX) or (LII).Preferred Mixtures: Mixtures containing at least 0.5 wt% (A), at least 1 wt% (B) and at least 0.1 wt% (C).BLEND1 contains (A) 5-99.5 wt% conjugated polymer(s) (POLY1) which contain 1-100 mol% units of formula (I) and (B) 0.1-95 wt% triplet emitter(s) (VERB1).BLEND2 contains (A) 0.5-99 wt% conjugated polymer(s) (POLY2) which contain 0.1-100 mol% covalently-bonded triplet emitter (VERB2) and (B) 1-99.5 wt% units of formula (II).BLEND3 contains (A) 0.5-98.5 wt% of any conjugated polymer (POLY3), (B) 1-99 wt% (II) and (C) 0.1-95 wt% triplet emitter(s) (VERB1).BLEND4 contains (A) 0.5-98.5 wt% POLY3 and (B) 1.5-99.5 wt% of a compound VERB3 which contains triplet emitter(s) covalently bonded to units (II).VERB2 is incorporated into the main chain or the side chain of POLY2. BLENDS 1-4 may also contain other molecules as described above for POLY4, and BLEND1 or BLEND4 may also contain units of formula (II), preferably so that the total amount of units (I) and (II) is 20-99 mol%.Units of formula (I) are incorporated via the 3,6- or 2,7-positions in the carbazole system in POLY1, or via the 3,3'- or 2,2'-positions of the two carbazole units in POLY1 if R is an aryl, heteroaryl, vinyl and/or acetylene unit, or via the bridge R or via one or two substituents R1 if R or R1 comprises an aryl, heteroaryl, stilbenyl and/or tolanyl unit. The number of aromatic atoms between the linkage points is a multiple of 4.Other structural elements in POLY1 to POLY3 comprise o-, m- or p-phenylene, 1,4-naphthylene, 9,10-anthrylene, 2,7-phenanthrylene, 1,6-, 2,7- or 4,9-pyrene, 2,7-tetrahydropyrene, oxadiazolylene, 2,5-thiophenylene, 2,5-pyrrolylene, 2,5-furanylene, 2,5-pyridylene, 2,5-pyrimidylene, 5,8-quinolinylene, fluorene, spiro-9,9'-bifluorene, indenofluorene or heteroindeno-fluorene. POLY1 to POLY3 may also contain other structural elements which improve charge transfer and/or charge injection and/or charge equilibrium, especially triarylamine or oxadiazolylene groups. The C-C or C-N linkages formed by groups Y are the result of Suzuki coupling, Yamamoto coupling, Stille coupling or Hartwig-Buchwald coupling reactions, and the monomeric compounds (LIX) in the polymer give rise to structural units (III)-(XXXVIII).    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Emitters: The triplet emitters (C) contain elements with an atomic number of more than 36, preferably Group 8 to 10 metals, especially ruthenium, osmium, rhodium, iridium, palladium and/or platinum.    TECHNOLOGY FOCUS - ELECTRONICS - Preferred Components: EC comprise organic light-emitting diodes, solar cells, laser diodes, optical detectors and non-linear optical devices. Preferred Definitions:    R = 3-10C alkylene (optionally substituted with R1 and optionally with C atoms replaced by NR2, O or S), a bivalent ring system selected from thiophen, benzene, biphenyl, naphthalene, anthracene or phenanthrene (optionally substituted with 1 or 2 R1), a 9,9'-substituted fluorene unit, a substituted bifluorene (with 0-4 R1 groups), a 9,10- or 9,9,10,10-substituted dihydrophenanthrene, a stilbenyl or tolanyl system (optionally with 0-2 R1 groups) or combinations of 2-3 of these systems;    n = 0, 1 or 2; and    Y = Cl, Br, I, O-tosylate, O-triflate, OSO2R2, B(OH)2, B(OR2)2, Sn(R2)3 or NHR2.    EXAMPLE - Monomers of formula (M1), (M2) and (M9) were obtained by the method described in WO 02/077060.    A comonomer (EM1) (3,6-dibromo-N-(N-carbazolyl)-propyl-carbazole) was obtained by reacting 10 g 3,6-dibromocarbazole with 0.99 g sodium hydride in 160 ml DMF, adding 8.9 g N-(3-bromopropyl)-carbazole and reacting for 8 hours at 60 degrees C.    A mixture of 1.965 g (M1), 3.1706 g (M2), 0.6069 g (M9), 0.4258 g (EM1), 4.05 g potassium phosphate hydrate, 25 ml dioxan, 25 ml toluene and 7 ml water was treated with 0.45 mg palladium(II) acetate and 3.65 mg tri-(o-tolyl)-phosphine, refluxed for 4 hours, end-capped with a solution of 24 mg 3,4-bis-pentoxy-benzeneboronic acid in 20 ml toluene, refluxed for 1 hour, treated with 40 mg 3,4-bis-pentoxy-bromobenzene in 10 ml toluene and refluxed for 3 hours. The mixture was diluted with 50 ml toluene and worked up by treatment with 100 ml 0.01% aqueous sodium cyanide solution, followed by phase separation and precipitation with methanol. This gave 4.73 g (93%) polymer (P1) with molecular weights: Mw = 352000 and Mn = 93000.    A phenylpyridyl-iridium(III) complex of formula (Ir2) was prepared as described in WO 02/081488 and WO 04/026886.    A mixture of (P1) with 8 wt% (Ir2) was dissolved in toluene and used for the production of a PLED as described in DE 10249723. The device obtained showed a peak wavelength of 605 (605) nm, a maximum efficiency of 9.28 (0.40) cd/A, an operating voltage (U) of 7.71 (6.50) V at 100 cd/m2 and CIE chromaticity coordinates of 0.60/0.40 (0.60/0.40). Values in brackets are for a similar system in which (P1) was replaced by a 40/50/10 terpolymer of (M1), (M2) and (M9), with no (EM1).