Optoelectronic component with a photoactive layer designed as a planar heterojunction
AssigneeHeliatek GmbH
InventorsLudovic COUTABLE, Andre WEISS
Life of this patent
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Abstract
The invention relates to optoelectronic component, comprising a bottom electrode (2), a top electrode (6), and a layer system (7) with at least one photoactive layer (4). The layer system is arranged between the bottom electrode and the top electrode, and at least one photoactive layer is designed as a planar heterojunction (PHJ), wherein the at least one photoactive layer designed as a planar heterojunction has at least one chemical compound of the general formula I. The invention also relates to the use of such a compound of the general formula I in an optoelectronic component and to a chemical compound of the general formula II.
Claims15
An optoelectronic component, preferably a photovoltaic element, having a base electrode, a top electrode and a layer system having at least one photoactive layer, wherein the layer system is disposed between the base electrode and the top electrode, wherein at least one photoactive layer takes the form of a planar heterojunction (PHJ), and wherein the at least one photoactive layer is formed as a planar heterojunction comprises at least one chemical compound of the general formula I
- with Y1 selected from the group consisting of N and CR21, wherein R21 is H, alkyl, O-alkyl, S-alkyl, a halogen, preferably F or Cl, CN, CF3 or SF5;
- with Y2 selected from the group consisting of N and CR22, wherein R22 is H, alkyl, O-alkyl, S-alkyl, a halogen, preferably F or Cl, CN, CF3 or SF5;
- with Y3 selected from the group consisting of N and CR23, wherein R23 is H, alkyl, O-alkyl, S-alkyl, a halogen, preferably F or Cl, CN, CF3 or SF5;
- with Z1 and Z2 independently selected from the group consisting of F, Cl, CN, CF3, C2F5, OCH3, and OC2H5;
- with R1 and R2 independently selected from the group consisting of H, F, Cl, Br, CN, CF3, CHF2, CH2F, C1-C4-alkyl, O—C1-C4-alkyl, S—C1-C4-alkyl, and N—(C1-C4-alkyl)2, with the proviso that at least R1 or R2 is Br, Cl, CF3, CHF2, CH2F or CH3;
- with R3 and R5 independently selected from the group consisting of H, halogen, CN, unsubstituted and aryl- or heteroaryl-substituted alkyl, unsubstituted and aryl- or heteroaryl-substituted alkenyl, O-alkyl, S-alkyl, an unsubstituted and alkyl-substituted heterocyclic 5-membered ring and 6-membered ring, preferably having at least one heteroatom selected from S, O or N, and an unsubstituted and alkyl-substituted homocyclic 6-membered ring, wherein the unsubstituted or substituted heterocyclic 5-membered ring or 6-membered ring, or the unsubstituted or substituted homocyclic 6-membered ring may be fused to a further unsubstituted or substituted heterocyclic 5-membered ring or 6-membered ring;
- with R4 and R6 independently selected from the group consisting of H, halogen, CN, alkyl, alkenyl, O-alkyl, S-alkyl, an unsubstituted and halogen-, alkyl- and/or O-alkyl-substituted heterocyclic 5-membered ring and 6-membered ring, preferably having at least one heteroatom selected from S, O and N, and an unsubstituted and halogen-, alkyl- and/or O-alkyl-substituted homocyclic 6-membered ring;
- or wherein R3 and R4 and/or R5 and R6 in each case together form an unsubstituted or halogen-, alkyl-, O-alkyl-, aryl- and/or heteroaryl-substituted heterocyclic 5-membered ring or 6-membered ring, preferably having at least one heteroatom selected from S, O and N, or an unsubstituted or halogen-, alkyl-, O-alkyl-, aryl- and/or heteroaryl-substituted homocyclic 6-membered ring.
The optoelectronic component as claimed in any of the preceding claims, wherein R3 and R4 and/or R5 and R6 form an unsubstituted or substituted heterocyclic 5-membered ring or 6-membered ring having at least one heteroatom selected from O, S and N, preferably from O and S, or an unsubstituted or substituted homocyclic 6-membered ring, or wherein R3 and R4 and/or R5 and R6 form an unsubstituted or substituted heterocyclic 5-membered ring, preferably a substituted heterocyclic 5-membered ring, having at least one heteroatom selected from O, S and N, preferably O and S, or an unsubstituted or substituted homocyclic 6-membered ring, preferably an unsubstituted homocyclic 6-membered ring.
The optoelectronic component as claimed in any of the preceding claims, wherein the at least one chemical compound is a compound of the general formula II
- with Y1 selected from the group consisting of N and CR21, wherein R21 is H, alkyl, O-alkyl, S-alkyl, a halogen, preferably F or Cl, CN or CF3;
- with Y2 selected from the group consisting of N and CR22, wherein R22 is H, alkyl, O-alkyl, S-alkyl, a halogen, preferably F or Cl, CN or CF3;
- with Y3 selected from the group consisting of N and CR23, wherein R23 is H, alkyl, O-alkyl, S-alkyl, a halogen, preferably F or Cl, CN or CF3;
- with Z1 and Z2 F or CF3;
- with X1 and X2 independently O, S or N—R8 with R8 selected from the group consisting of H, alkyl and aryl, wherein preferably X1 and X2 are S or X1 and X2 are O;
- with R1 and R2 independently selected from the group consisting of H, F, Cl, Br, CN, CF3, CHF2, CH2F, C1-C4-alkyl, O—C1-C4-alkyl, S—C1-C4-alkyl, and N—(C1-C4-alkyl)2, with the proviso that at least R1 or R2 is Br, Cl, CF3, CH2F, CHF2 or CH3;
- wherein R13 and R15 are independently selected from the group consisting of H, halogen, CN, alkyl, O-alkyl and S-alkyl, preferably H or Cl-C4-alkyl;
- wherein R14 and R16 are independently selected from the group consisting of an unsubstituted and halogen-, alkyl-, fluorinated alkyl-, O-alkyl- and/or fluorinated O-alkyl-substituted heterocyclic 5-membered ring or 6-membered ring, preferably having a heteroatom independently selected from S, O and N, and an unsubstituted and halogen-, alkyl-, fluorinated alkyl-, O-alkyl- and/or fluorinated O-alkyl-substituted homocyclic 6-membered ring, preferably from an unsubstituted and substituted heterocyclic 5-membered ring, and an unsubstituted and substituted homocyclic 6-membered ring.
The optoelectronic component as claimed in any of the preceding claims, wherein Y1 and Y3 are CH and Y2 is CR22, preferably with CR22 selected from F, Br, Cl, and CN, or Y1 is CR21, Y2 is N and Y3 is CR23, preferably with CR21 and CR23 H or methyl, or Y1 is N, Y2 is CR22 and Y3 is N, preferably with CR22 H or methyl.
The optoelectronic component as claimed in any of the preceding claims, wherein the at least one chemical compound is a compound of the general formula III
- wherein X1 and X2 are independently O or S, wherein R40 is H, Cl or F, preferably H, and wherein Hal is Br, Cl or F.
The optoelectronic component as claimed in any of the preceding claims, wherein the at least one chemical compound is a compound of the general formula IV
- wherein X1 and X2 are independently O or S, wherein R41 is H, F, Cl, Br, CF3 or C1-C4-alkyl, preferably H or Cl, and wherein Hal is Br, Cl or F.
The optoelectronic component as claimed in any of the preceding claims, wherein the at least one chemical compound is a compound of the general formula V
- wherein X1 and X2 are independently O or S, wherein R42 is H, F, Cl, CF3 or C1-C4-alkyl, and wherein Hal is Br, Cl or F.
The optoelectronic component as claimed in any of the preceding claims, wherein R14 and R16 are independently an unsubstituted or halogen-, alkyl- and/or O-alkyl-substituted heterocyclic 5-membered ring having at least one heteroatom selected from S, O and N, preferably O and S, wherein preferably R19, or R17 and R19, or R18 and R19 are substituted, or an unsubstituted or a halogen-, alkyl-, fluorinated alkyl-, O-alkyl- and/or fluorinated O-alkyl-substituted homocyclic 6-membered ring, wherein preferably R32, R33, or R32 and R34, are substituted, or, preferably, R31 to R35 are H.
The optoelectronic component as claimed in any of the preceding claims, wherein the compound is selected from the group consisting of:
A chemical compound of the general formula II
- with Y1 selected from the group consisting of N and CR21, wherein R21 is H, alkyl, O-alkyl, S-alkyl, a halogen, preferably F or Cl, CN or CF3;
- with Y2 selected from the group consisting of N and CR22, wherein R22 is H, alkyl, O-alkyl, S-alkyl, a halogen, preferably F or Cl, CN or CF3;
- with Y3 selected from the group consisting of N and CR23, wherein R23 is H, alkyl, O-alkyl, S-alkyl, a halogen, preferably F or Cl, CN or CF3;
- with Z1 and Z2 F or CF3;
- with X1 and X2 independently O, S or N—R8 with R8 selected from the group consisting of H, alkyl and aryl, wherein preferably X1 and X2 are S or X1 and X2 are O;
- with R1 and R2 independently selected from the group consisting of H, F, Cl, Br, CN, CF3, CHF2, CH2F, C1-C4-alkyl, O—C1-C4-alkyl, S—C1-C4-alkyl, and N—(C1-C4-alkyl)2, with the proviso that at least R1 or R2 is Br, Cl, CF3, CHF2, CH2F or CH3;
- wherein R13 and R15 are independently selected from the group consisting of H, halogen, CN, alkyl, O-alkyl and S-alkyl, preferably H or C1-C4-alkyl;
- wherein R14 and R16 are independently selected from the group consisting of an unsubstituted and halogen-, alkyl-, fluorinated alkyl-, O-alkyl- and/or fluorinated O-alkyl-substituted heterocyclic 5-membered ring or 6-membered ring, preferably having a heteroatom independently selected from S, O and N, and an unsubstituted and halogen-, alkyl-, fluorinated alkyl-, O-alkyl- and/or fluorinated O-alkyl-substituted homocyclic 6-membered ring, preferably from an unsubstituted and substituted heterocyclic 5-membered ring, and an unsubstituted and substituted homocyclic 6-membered ring.
Dependencies are inferred from the claim text.