US 11,737,360 B2
Photoelectric conversion device and sensor and electronic device
Daiki Minami, Suwon-si (KR); Sung Young Yun, Suwon-si (KR); Kyung Bae Park, Hwaseong-si (KR); Sung Jun Park, Yongin-si (KR); and Chul Joon Heo, Busan (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Oct. 14, 2020, as Appl. No. 17/70,502.
Claims priority of application No. 10-2019-0140289 (KR), filed on Nov. 5, 2019.
Prior Publication US 2021/0135126 A1, May 6, 2021
Int. Cl. H01L 51/00 (2006.01); H10K 85/60 (2023.01); H10K 30/30 (2023.01); H10K 30/81 (2023.01); H10K 85/40 (2023.01); H10K 102/00 (2023.01)
CPC H10K 85/6572 (2023.02) [H10K 30/30 (2023.02); H10K 30/81 (2023.02); H10K 85/40 (2023.02); H10K 85/631 (2023.02); H10K 85/654 (2023.02); H10K 2102/00 (2023.02)] 33 Claims
OG exemplary drawing
 
20. A photoelectric conversion device, comprising
a first electrode and a second electrode; and
a photoelectric conversion layer between the first electrode and the second electrode,
the photoelectric conversion layer including a mixture of a first material, a second material, and a third material,
the first material, the second material, and the third material being different from each other,
the first material and the third material being light-absorbing materials having a maximum absorption wavelength in a first wavelength region,
the first wavelength region being one of a blue wavelength region, a green wavelength region, a red wavelength region, and an infra-red wavelength region,
a dipole moment of the third material being greater than or equal to about 5.5 Debye,
the third material being included in an amount of less than or equal to about 30 volume % based on a total volume of the first material and the third material, and
wherein a HOMO energy level of the photoelectric conversion layer is deeper than a HOMO energy level of the thin film formed of the first material and the second material, wherein
the third material is represented by Chemical Formula 1-1,

OG Complex Work Unit Chemistry
wherein, in Chemical Formula 1-1,
X2 is O, S, Se, Te, SO, SO2, SiRaRb, or GeRcRd,
Ar2 is a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heterocyclic group, or a fused ring including a combination thereof,
Ar1b and Ar2b independently are hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C3 to C30 heteroaryl group,
Ar1b and Ar2b are independently present alone or are linked with each other to form a fused ring, and
R4 to R6 and Ra to Rd are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 heteroaryl group, a halogen, or a cyano group.