[특허]Materials for electronic and optoelectronic devices having enhanced charge transfer

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01L-031/00
출원번호	US-0235134 (2011-09-16)
등록번호	US-8476616 (2013-07-02)
발명자 / 주소	Sargent, Edward Hartley Koleilat, Ghada Levina, Larissa
출원인 / 주소	InVisage Technologies, Inc.
대리인 / 주소	Schwegman Lundberg & Woessner, P.A.
인용정보	피인용 횟수 : 20 인용 특허 : 45

초록 ▼

A composite material is described. The composite material comprises semiconductor nanocrystals, and organic molecules that passivate the surfaces of the semiconductor nanocrystals. One or more properties of the organic molecules facilitate the transfer of charge between the semiconductor nanocrystal

A composite material is described. The composite material comprises semiconductor nanocrystals, and organic molecules that passivate the surfaces of the semiconductor nanocrystals. One or more properties of the organic molecules facilitate the transfer of charge between the semiconductor nanocrystals. A semiconductor material is described that comprises p-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of electrons in the semiconductor material being greater than or equal to a mobility of holes. A semiconductor material is described that comprises n-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of holes in the semiconductor material being greater than or equal to a mobility of electrons.

대표청구항 ▼

1. A composite material, comprising: at least one nanoparticle;organic molecules to passivate surfaces of the at least one nanoparticle, at least one property of the organic molecules being to facilitate a transfer of charge between ones of the at least one nanoparticle, each of the organic molecule

1. A composite material, comprising: at least one nanoparticle;organic molecules to passivate surfaces of the at least one nanoparticle, at least one property of the organic molecules being to facilitate a transfer of charge between ones of the at least one nanoparticle, each of the organic molecules being a benzene ring that includes at least one functional group; andat least one bidentate linker coupled to the nanoparticle and consisting of a first end group and a second end group, the bidentate linker including a conjugated moiety coupled between the first end group and the second end group. 2. The composite material of claim 1, wherein the at least one nanoparticle is chosen from at least one of the molecules including lead sulfide (PbS) and lead selenide (PbSe). 3. The composite material of claim 1, wherein the at least one bidentate linker is a dithiol. 4. The composite material of claim 1, wherein the at least one bidentate linker is a benzenedithiol. 5. The composite material of claim 1, wherein electronic properties of the composite material are stable in time. 6. A device, comprising: a first electrode;a composite material including at least one nanoparticle; andat least one bidentate linker having a first end group and a second end group, the bidentate linker including a conjugated moiety coupled between the first end group and the second end group;a second electrode forming a metal-semiconductor junction with a layer that includes colloidal quantum dots; anda benzene ring that includes at least one functional group. 7. The device of claim 6, wherein the first electrode is chosen from at least one of the groups including indium tin oxide (ITO), platinum (Pt), and gold (Au). 8. The device of claim 6, wherein the second electrode is chosen from at least one of the groups including aluminum (Al), silver (Ag), and manganese (Mg). 9. The device of claim 6, wherein an external quantum efficiency of the device exceeds about 40%.

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