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US 12,757,629 B2Granted
Perovskite photodiode and image sensor and electronic device
AssigneesSamsung Electronics Co., Ltd., Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
InventorsSeon-Jeong Lim, Hui Joon Park, In Kim, Han Sol Park, Jihyeon Heo, Hyerim Hong
Life of this patent
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Abstract
A perovskite photodiode includes a first electrode and a second electrode, and a perovskite photoelectric conversion layer between the first electrode and the second electrode and including a Pb-free perovskite, and an auxiliary layer between the first electrode and the perovskite photoelectric conversion layer, and including a compound represented by Chemical Formula 1. In Chemical Formula 1, X1, X2 and R1 to R6 are as defined in the specification.
Claims19
A perovskite photodiode, comprising:
- a first electrode and a second electrode,
- a perovskite photoelectric conversion layer between the first electrode and the second electrode, the perovskite photoelectric conversion layer including a Pb-free perovskite, and
- an auxiliary layer between the first electrode and the perovskite photoelectric conversion layer, the auxiliary layer including a compound represented by Chemical Formula 1:
- wherein, in Chemical Formula 1,
- X1 and X2 are different from each other and each is CRaRb, SiRcRd, or NRc,
- R2 to R5 are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C3 to C20 heterocyclic group, a halogen, a cyano group, —NRfRg, or any combination thereof,
- Ra to Rg are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C3 to C20 heterocyclic group, a halogen, a cyano group, or any combination thereof,
- Ra and Rb are each independently present or are combined with each other to form a first ring,
- Rc and Rd are each independently present or are combined with each other to form a second-ring, and ring,
- Rf and Rg are each independently present or are combined with each other to form a third ring, and
- R1 and R6 in Chemical Formula 1 are each —NRfRg, wherein Rf and Rg are each a substituted or unsubstituted C6 to C20 aryl group, and Rf and Rg are bonded to each other through a single bond, a substituted or unsubstituted C1 to C5 alkylene group, a substituted or unsubstituted C2 to C5 alkenylene group, a substituted or unsubstituted C6 to C20 arylene group, O, S, Se, Te, CRhRi, SiRjRk, or GeRlRm to form a separate ring, wherein Rh to Rm are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C3 to C20 heterocyclic group, a halogen, a cyano group, or any combination thereof.
8 more elements
An image sensor, comprising:
- a substrate,
- a first perovskite photodiode on the substrate, and
- a wavelength selective filter layer overlapped with the first perovskite photodiode and comprising a plurality of wavelength selective filters,
- wherein the first perovskite photodiode includes
- a first electrode and a second electrode,
- a first perovskite photoelectric conversion layer between the first electrode and the second electrode, the first perovskite photoelectric conversion layer including a first Pb-free perovskite, and
- a first auxiliary layer between the first electrode and the first perovskite photoelectric conversion layer, the first auxiliary layer including a compound represented by Chemical Formula 1:
- wherein, in Chemical Formula 1,
- X1 and X2 are different from each other and each is CRaRb, SiRcRd, or NRc,
- R2 to R5 are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C3 to C20 heterocyclic group, a halogen, a cyano group, —NRfRg, or any combination thereof,
- Ra to Rg are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C3 to C20 heterocyclic group, a halogen, a cyano group, or any combination thereof,
- Ra and Rb are each independently present or are combined with each other to form a first ring,
- Rc and Rd are each independently present or are combined with each other to form a second ring,
- Rf and Rg are each independently present or are combined with each other to form a third ring, and
- R1 and R6 in Chemical Formula 1 are each —NRfRg, wherein Rf and Rg are each a substituted or unsubstituted C6 to C20 aryl group, and Rf and Rg are bonded to each other through a single bond, a substituted or unsubstituted C1 to C5 alkylene group, a substituted or unsubstituted C2 to C5 alkenylene group, a substituted or unsubstituted C6 to C20 arylene group, O, S, Se, Te, CRhRi, SiRjRk or GeRlRm to form a separate ring, wherein Rh to Rm are each independently hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C3 to C20 heterocyclic group, a halogen, a cyano group, or any combination thereof.
12 more elements
Dependencies are inferred from the claim text.