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CN-122003015-A - Solar cell, electric equipment and power generation equipment

CN122003015ACN 122003015 ACN122003015 ACN 122003015ACN-122003015-A

Abstract

The application discloses a solar cell, electric equipment and power generation equipment, wherein the solar cell comprises a light absorption layer and a hole transmission layer, the hole transmission layer comprises a first hole transmission material, the first hole transmission material comprises a self-assembled hole transmission material, the general formula of the self-assembled hole transmission material comprises Ar- (L) m -Q, and m is any integer of 0-10. According to the embodiment of the application, the benzo aromatic ring and/or benzo heteroaromatic ring structure is introduced into the self-assembled hole transport material, so that the conjugation range of the self-assembled hole transport material is enlarged, the hole transport capacity of the self-assembled hole transport material is improved, the transport rate of holes in the hole transport layer is improved, and the battery performance of the solar battery is improved.

Inventors

  • JIA BOYU
  • LIU SHUO
  • CHEN CHEN
  • WU XUEYUN
  • CHEN JUNCHAO

Assignees

  • 宁德时代未来能源(上海)研究院有限公司
  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260508
Application Date
20241101

Claims (17)

  1. 1. The solar cell is characterized by comprising a light absorption layer and a hole transport layer, wherein the hole transport layer comprises a first hole transport material, the first hole transport material comprises a self-assembled hole transport material, and the self-assembled hole transport material has a general formula of Ar- (L) m -Q, wherein m is any integer of 0-10; the general formula of Ar is shown as formula (1) or formula (2): Wherein: y 1 ～Y 3 is independently selected from any of-C (R 35 ) 2 -、-N(R 36 )-、-O-、-S-、-C(＝O)-、-C[＝C(R 37 ) 2 ]; L is selected from the group consisting of-C (R 38 ) 2 -、-N(R 39 )-、-O-、-Si(R 40 ) 2 -、-P(R 41 ) -, -S-, -C (=O) -, -One or more of C (=s) -, -C [ =n (R 42 )]-、-C[＝C(R 43 ) 2 ] -, substituted or unsubstituted cyclic subunit; R 1 ～R 43 is independently selected from any of hydrogen, a halogen group, R 1 ', a halogen substituted R 2 '、-O(R 3 ')、-OCO(R 4 ')、-N(R 5 ') 2 、-S(R 6 '); R 1 '～R 6 ' is independently selected from any one of substituted or unsubstituted phenyl, substituted or unsubstituted thienyl, substituted or unsubstituted alkyl with 1-10 carbon atoms; q is selected from one or two of oxo acid groups and oxo acid derivative groups.
  2. 2. The solar cell according to claim 1, wherein the cyclic subunit comprises one or more of a cycloalkane subunit, an aromatic subunit, and a heteroaromatic subunit.
  3. 3. The solar cell according to claim 2, wherein L is one or more selected from the group consisting of formula (3) to formula (10): Wherein Z 1 ～Z 40 is independently selected from any one of-CR 44 -, -N-; Y 4 ～Y 9 is independently selected from any of-C (R 45 ) 2 -、-N(R 46 )-、-O-、-S-、-C(＝O)-、-C[＝C(R 47 ) 2 ]; R 44 ～R 47 is independently selected from any of hydrogen, a halogen group, R 7 ', a halogen substituted R 8 '、-O(R 9 ')、-OCO(R 10 ')、-N(R 11 ') 2 、-S(R 12 '); r 7 '～R 12 ' is independently selected from any one of substituted or unsubstituted phenyl, substituted or unsubstituted thienyl, and substituted or unsubstituted alkyl with 1-10 carbon atoms.
  4. 4. The solar cell according to claim 3, wherein L is one or more selected from the group consisting of formula (11) to formula (13): Y 10 ～Y 11 is independently selected from any of-C (R 48 ) 2 -、-N(R 49 )-、-O-、-S-、-C(＝O)-、-C[＝C(R 50 ) 2 ]; R 48 ～R 50 is independently selected from any of hydrogen, a halogen group, R 13 ', a halogen substituted R 14 '、-O(R 15 ')、-OCO(R 16 ')、-N(R 17 ') 2 、-S(R 18 '); r 13 '～R 18 ' is independently selected from any one of substituted or unsubstituted phenyl, substituted or unsubstituted thienyl, and substituted or unsubstituted alkyl with 1-10 carbon atoms.
  5. 5. The solar cell according to any one of claims 1 to 4, wherein the oxy acid group comprises one or more of-COOH, -PO (OH) 2 、-PHO(OH)、-SO 2 (OH)、-B(OH) 2 .
  6. 6. The solar cell according to any one of claims 1 to 5, wherein Ar is selected from any one of formulas (14) to (22): Wherein R 51 ～R 59 is independently selected from any one of hydrogen and halogen groups.
  7. 7. The solar cell according to any one of claims 1 to 6, wherein the self-assembled hole transport material comprises one or more of the formulae (23) to (30): wherein R 60 ～R 61 is independently selected from any one of hydrogen and halogen groups.
  8. 8. The solar cell according to any one of claims 1 to 7, wherein the hole transport layer comprises a first hole transport layer and a second hole transport layer, the first hole transport layer is disposed between the second hole transport layer and the light absorbing layer, the first hole transport layer comprises the first hole transport material, the second hole transport layer comprises a second hole transport material, and the second hole transport material is different from the first hole transport material.
  9. 9. The solar cell of claim 8, wherein the second hole transport material comprises a metal oxide.
  10. 10. The solar cell according to claim 9, wherein the metal oxide comprises one or more of nickel oxide, molybdenum oxide, and tungsten oxide.
  11. 11. The solar cell according to any one of claims 1-10, wherein the light absorbing layer comprises a perovskite material, wherein the perovskite material has a general formula ABX 3 or a 2 CDX 6 ; Wherein A, B, C, D is selected from one or more of inorganic cations, organic and inorganic mixed cations, and X is selected from one or more of inorganic anions, organic and inorganic mixed anions.
  12. 12. The solar cell according to claim 11, wherein a comprises one or more of cesium cations, formamidine cations, methylamine cations, rubidium cations, and guanidine cations, B comprises one or more of tin cations and lead cations, C comprises silver cations, D comprises one or more of bismuth cations, antimony cations, and indium cations, and X comprises one or more of fluoride anions, chloride anions, bromide anions, and iodide anions.
  13. 13. The solar cell according to any one of claims 1 to 12, wherein the solar cell comprises a substrate, a first conductive layer, a hole transport layer, a light absorption layer, an electron transport layer, and a second conductive layer, which are stacked in this order.
  14. 14. The self-assembled hole transport material is characterized in that the general formula of the self-assembled hole transport material comprises Ar- (L) m -Q, and m is any integer from 0 to 10; the general formula of Ar is shown as formula (1) or formula (2): Wherein: y 1 ～Y 3 is independently selected from any of-C (R 35 ) 2 -、-N(R 36 )-、-O-、-S-、-C(＝O)-、-C[＝C(R 37 ) 2 ]; L is selected from the group consisting of-C (R 38 ) 2 -、-N(R 39 )-、-O-、-Si(R 40 ) 2 -、-P(R 41 ) -, -S-, -C (=O) -, -One or more of C (=s) -, -C [ =n (R 42 )]-、-C[＝C(R 43 ) 2 ] -, substituted or unsubstituted cyclic subunit; R 1 ～R 43 is independently selected from any of hydrogen, a halogen group, R 1 ', a halogen substituted R 2 '、-O(R 3 ')、-OCO(R 4 ')、-N(R 5 ') 2 、-S(R 6 '); R 1 '～R 6 ' is independently selected from any one of substituted or unsubstituted phenyl, substituted or unsubstituted thienyl, substituted or unsubstituted alkyl with 1-10 carbon atoms; q is selected from one or two of oxo acid groups and oxo acid derivative groups.
  15. 15. An electrical device comprising a solar cell according to any one of claims 1-13.
  16. 16. A power generation apparatus comprising the solar cell according to any one of claims 1 to 13.
  17. 17. A photovoltaic device comprising a solar cell according to any one of claims 1 to 13.

Description

Solar cell, electric equipment and power generation equipment Technical Field The invention relates to the technical field of new energy, in particular to a solar battery, electric equipment and power generation equipment. Background This section provides merely background information related to the application, which is not necessarily prior art. The solar cell has the advantages of high conversion efficiency, easiness in preparation and the like, and has wide application prospect. The hole transport layer is an important film layer structure of the solar cell, and the hole transport capability of the hole transport layer has an important influence on the cell performance of the solar cell. For this purpose, the present invention is proposed. Disclosure of Invention In view of the technical problems in the background art, the application provides a solar cell, electric equipment and power generation equipment, and aims to improve the cell performance of the solar cell. In order to achieve the above object, a first aspect of the present application provides a solar cell comprising a light absorbing layer and a hole transporting layer, wherein the hole transporting layer comprises a first hole transporting material comprising a self-assembled hole transporting material, wherein the self-assembled hole transporting material has a general formula of Ar- (L) m -Q, and m is any integer of 0 to 10; ar has a general formula shown in a formula (1) or a formula (2): Wherein: y 1～Y3 is independently selected from any of-C (R 35)2-、-N(R36)-、-O-、-S-、-C(＝O)-、-C[＝C(R37)2 ]; l is selected from one or more of -C(R38)2-、-N(R39)-、-O-、-Si(R40)2-、-P(R41)-、-S-、-C(＝O)-、-C(＝S)-、-C[＝N(R42)]-、-C[＝C(R43)2]-、 substituted or unsubstituted cyclic subunits; R 1～R43 is independently selected from any of hydrogen, a halogen group, R 1 ', a halogen substituted R 2'、-O(R3')、-OCO(R4')、-N(R5')2、-S(R6'); R 1'～R6' is independently selected from any one of substituted or unsubstituted phenyl, substituted or unsubstituted thienyl, substituted or unsubstituted alkyl with 1-10 carbon atoms; q is selected from one or two of oxo acid groups and oxo acid derivative groups. According to the embodiment of the application, the benzo aromatic ring and/or benzo heteroaromatic ring structure is introduced into the self-assembled hole transport material, so that the conjugation range of the self-assembled hole transport material is enlarged, the hole transport capacity of the self-assembled hole transport material is improved, the transport rate of holes in the hole transport layer is improved, and the battery performance of the solar battery is improved. In some embodiments, the cyclic subunit comprises one or more of a cycloalkane subunit, an aromatic subunit, a heteroaromatic subunit. The embodiment of the application improves the conjugation range of the self-assembled hole transport material by comprising the self-assembled hole transport material with the annular subunit intermediate group so as to improve the hole transport capacity of the self-assembled hole transport material and further improve the battery performance of the solar battery. In some embodiments, L is selected from one or more of formulas (3) to (10): Wherein Z 1～Z40 is independently selected from any one of-CR 44 -, -N-; Y 4～Y9 is independently selected from any of-C (R 45)2-、-N(R46)-、-O-、-S-、-C(＝O)-、-C[＝C(R47)2 ]; R 44～R47 is independently selected from any of hydrogen, a halogen group, R 7 ', a halogen substituted R 8'、-O(R9')、-OCO(R10')、-N(R11')2、-S(R12'); r 7'～R12' is independently selected from any one of substituted or unsubstituted phenyl, substituted or unsubstituted thienyl, and substituted or unsubstituted alkyl with 1-10 carbon atoms. According to the embodiment of the application, the conjugation range of the self-assembled hole transport material is increased by the self-assembled hole transport material containing the intermediate group, so that the hole transport capacity of the self-assembled hole transport material is increased, and the cell performance of the solar cell is improved. In some embodiments, L is selected from one or more of formulas (11) to (13): Y 10～Y11 is independently selected from any of-C (R 48)2-、-N(R49)-、-O-、-S-、-C(＝O)-、-C[＝C(R50)2 ]; R 48～R50 is independently selected from any of hydrogen, a halogen group, R 13 ', a halogen substituted R 14'、-O(R15')、-OCO(R16')、-N(R17')2、-S(R18'); r 13'～R18' is independently selected from any one of substituted or unsubstituted phenyl, substituted or unsubstituted thienyl, and substituted or unsubstituted alkyl with 1-10 carbon atoms. According to the embodiment of the application, the conjugation range of the self-assembled hole transport material is increased by the self-assembled hole transport material containing the intermediate group, so that the hole transport capacity of the self-assembled hole transport material is increased, and the cell performance of the solar cell is improved. In some embodiments,