Title:
PHOTOELECTRIC CONVERSION ELEMENT AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/244575
Kind Code:
A1
Abstract:
A photoelectric conversion element comprising: a photoelectric conversion layer (4); a first electrode (2) for collecting holes generated in the photoelectric conversion layer (4); and a second electrode (3) opposite to the first electrode (2) with the photoelectric conversion layer (4) therebetween to collect electrons generated in the photoelectric conversion layer (4). The photoelectric conversion layer (4) includes a first quantum dot layer (4a) including a plurality of first quantum dots with a surface modified by a first ligand, and a second quantum dot layer (4b) positioned between the first quantum dot layer (4a) and the second electrode (3) and including a plurality of second quantum dots with a surface modified by a second ligand different from the first ligand. The ionization potential of the second quantum dot layer (4b) is greater than the ionization potential of the first quantum dot layer (4a). A second value indicating the particle diameter distribution of the plurality of second quantum dots is smaller than a first value indicating the particle diameter distribution of the plurality of first quantum dots.
Inventors:
MACHIDA SHINICHI
MATSUKAWA NOZOMU
SANO FUMIYA
MATSUKAWA NOZOMU
SANO FUMIYA
Application Number:
PCT/JP2022/018142
Publication Date:
November 24, 2022
Filing Date:
April 19, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01L31/0352; H01L27/146; H01L27/30; H01L31/10
Domestic Patent References:
| WO2017038698A1 | 2017-03-09 | |||
| WO2017006520A1 | 2017-01-12 | |||
| WO2015076300A1 | 2015-05-28 |
Foreign References:
| JP2021064663A | 2021-04-22 | |||
| JP2016162886A | 2016-09-05 | |||
| US20150295107A1 | 2015-10-15 | |||
| JP6083813B2 | 2017-02-22 | |||
| JP6255417B2 | 2017-12-27 | |||
| JP6298223B2 | 2018-03-20 |
Other References:
PRADHAN SANTANU, STAVRINADIS ALEXANDROS, GUPTA SHUCHI, BI YU, DI STASIO FRANCESCO, KONSTANTATOS GERASIMOS: "Trap-State Suppression and Improved Charge Transport in PbS Quantum Dot Solar Cells with Synergistic Mixed-Ligand Treatments", SMALL, WILEY, vol. 13, no. 21, 1 June 2017 (2017-06-01), pages 1 - 9, XP055782946, ISSN: 1613-6810, DOI: 10.1002/smll.201700598
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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