Embodiments of the invention relate to a composite film and a fabrication method thereof, a photoelectric element and a photoelectric apparatus. The fabrication method of the composite film includes: preparing a polyfluorene-based compound solution, wherein the polyfluorene-based compound solution includes polyfluorene or polyfluorene derivatives; preparing a quantum dot solution; mixing the polyfluorene-based compound solution and the quantum dot solution together to prepare a mixed solution; removing a solvent in the mixed solution to prepare the composite film.

Polymers comprising at least one unit of formulae ##STR00001## and compounds of the formulae ##STR00002## wherein, in formulae 1, 1′, 2 and 2′ n is 0, 1, 2, 3 or 4 m is 0, 1, 2, 3 or 4 M1 and M2 are independently of each other an aromatic or heteroaromatic monocyclic or bicyclic ring system; X is at each occurrence selected from the group consisting of O, S, Se or Te, Q is at each occurrence selected from the group consisting of C, Si or Ge R is at each occurrence selected from the group consisting of hydrogen, C.sub.1-100-alkyl, C.sub.2-100-alkenyl, C.sub.2-100-alkynyl, C.sub.5-12-cycloalkyl, C.sub.6-18-aryl, a 5 to 20 membered heteroaryl, C(O)—C.sub.1-100-alkyl, C(O)—C.sub.5-12-cycloalkyl and C(O)—OC.sub.1-100-alkyl. R.sup.2, R.sup.2′, R.sup.2″, R* are at each occurrence independently selected from the group consisting of hydrogen, C.sub.1-30-alkyl, C.sub.2-30-alkenyl, C.sub.2-30-alkynyl, C.sub.5-12-cycloalkyl, C.sub.6-18-aryl, 5 to 20 membered heteroaryl, OR.sup.21, OC(O)—R.sup.21, C(O)—OR.sup.21, C(O)—R.sup.21, NR.sup.21R.sup.22, NR.sup.21—C(O)R.sup.22, C(O)—NR.sup.21R.sup.22, N[C(O)R.sup.21][C(O)R.sup.22], SR.sup.21, halogen, CN, SiR.sup.SisR.sup.SitR.sup.Siu and OH, L.sup.1 and L.sup.2 are independently from each other and at each occurrence selected from the group consisting of C.sub.6-30-arylene, 5 to 30 membered heteroarylene, ##STR00003##

Provided is a conductor material having high conductivity. The conductor material according to an embodiment of the present disclosure has a configuration in which a conjugated polymeric compound having an electron donating group containing a heteroatom in a side chain is doped with a dopant containing an anion selected from a nitrogen anion, a boron anion, a phosphorus anion and an antimony anion, and a counter cation. The anion is preferably an anion represented by Formula (1) below: where R.sup.1 and R.sup.2 are identical or different, and each represent an electron withdrawing group; and R.sup.1 and R.sup.2 may be bonded to each other to form a ring with an adjacent nitrogen atom.

##STR00001##

The present application relates to a polymer containing at least one structural unit of a formula (I) and at least one further structural unit selected from structural units A, B and C. The present application further relates to the use of the polymer in an electronic device and to a process for preparing the polymer. The present application further relates to an electronic device comprising the polymer.

This application discloses a white-light hyperbranched conjugated polymer, a method for preparing the same and its use. The polymer uses a red phosphorescent Ir(III) complex as a core and polyfluorene derivative blue fluorescent materials as a framework which either contains or does not contain carbazole derivatives, and the white light hyperbranched polymers realize white-light emission by adjusting the content of the red phosphorescent Ir(III) complex connected using the complementation of blue and red color. The electroluminescent spectrum of the conjugated polymer in the present application covers the whole visible light emission area and is close to the pure white light emission, by which the conjugated polymer could be used as a material used in light-emitting layer to prepare the organic electroluminescent devices.

A composition comprising a phosphorescent compound of formula (I) and a polymer comprising a repeat unit of formula (II) Ar.sup.1 is an aryl or heteroaryl group. R.sup.2 is a substituent. A is independently in each occurrence N or CR.sup.3 wherein R.sup.3 is H or a substituent. M is a transition metal or metal ion. x is a positive integer of at least 1. y is 0 or a positive integer. L.sup.1 is a mono- or polydentate ligand. R.sup.1 is a substituent. z is 0 or a positive integer. X is O or S. The phosphorescent compound of formula (I) may be mixed with the polymer or may be covalently bound thereto. The composition may be used in the light-emitting layer of an organic light-emitting device.

The present invention relates to organic copolymers and organic semiconducting compositions comprising these materials, including layers and devices comprising such organic semiconductor compositions. The invention is also concerned with methods of preparing such organic semiconductor compositions and layers and uses thereof. The invention has application in the field of printed electronics and is particularly useful as the semiconducting material for use in formulations for organic thin film-transistor (OFET) backplanes for displays, integrated circuits, organic light emitting diodes (OLEDs), photodetectors, organic photovoltaic (OPV) cells, sensors, memory elements and logic circuits.

A polymer compound comprising a structural unit represented by the formula (1): ##STR00001##
wherein Ring A and Ring B represent each independently a heterocyclic ring, and the heterocyclic ring may have a substituent, Ring C represents an aromatic hydrocarbon ring obtained by condensing two or more benzene rings, the aromatic hydrocarbon ring has at least one of an alkyl group, an alkoxy group, an alkylthio group, an amino group or a hydroxyl group, and these groups may have a substituent, Z.sup.1 and Z.sup.2 represent each independently a group represented by the formula (Z-1), a group represented by the formula (Z-2), a group represented by the formula (Z-3), a group represented by the formula (Z-4) or a group represented by the formula (Z-5), ##STR00002##
wherein R represents an alkyl group, an alkoxy group, an alkylthio group, an aryl group or a mono-valent heterocyclic group, and these groups may have a substituent, and when there exist a plurality of R, these may be the same or different.

An organic light-emitting device (100) comprising an anode (103); a cathode (109); a light-emitting layer (107) between the anode and the cathode; a first hole-transporting layer (105A) comprising a first conjugated hole-transporting polymer between the anode and the light-emitting layer; and a second hole-transporting layer (105B) comprising a second conjugated hole-transporting polymer between the first hole-transporting layer and the light-emitting layer, wherein a lowest excited state energy level of the first hole-transporting polymer is lower than the lowest excited state energy of the second hole-transporting polymer.

An organic light-emitting device (100) comprising an anode (103); a cathode (109); a first light-emitting layer (107) comprising a first light-emitting material between the anode and the cathode; and a hole-transporting layer (105) comprising a hole-transporting polymer between the anode and the first light-emitting layer and adjacent to the first light-emitting layer, wherein a HOMO level of the first light-emitting material is closer to vacuum than a HOMO level of the hole-transporting polymer and wherein more than 50 mol % of the repeat units of the hole-transporting polymer are hole-transporting repeat units.