Synthesis of multinary chalcogenide nanoparticles comprising cu, zn, sn, s, and se

A nanoparticle and particle technology, applied in the field of multi-component chalcogenide CZTSSe nanoparticles4, can solve the problems of slow progress of solar cells
CN102459063AInactive Publication Date: 2012-05-16PURDUE RES FOUND INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PURDUE RES FOUND INC
Publication Date
2012-05-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

Nanoparticle compositions and methods for synthesizing multinary chalcogenide CZTSSe nanoparticles containing Cu, Zn, and Sn in combination with S, Se or both are described. The nanoparticles may be incorporated into one or more ink solutions alone or in combination with other chalcogenide-based particles to make thin films useful for photovoltaic applications, including thin films from multilayer particle films having a composition profile. The composition and stoichiometry of the thin films may be further modified by subjecting the particle films to gas or liquid phase chalcogen exchange reactions.
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Description

[0001] related application

[0002] This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Patent Application No. 61 / 181,160, filed May 26, 2009, which is incorporated herein by reference in its entirety. technical field

[0003] The present invention relates to multi-component chalcogenide CZTSSe nanoparticles containing Cu, Zn, Sn, S and Se (i.e. Cu 2 ZnSn(S y , Se 1-y ) 4 , wherein 0≤y≤1) compositions, and their synthesis and use methods. Nanoparticles can be used to make thin films useful in optoelectronic applications. Background technique

[0004] Among the various semiconducting nanomaterials studied for optoelectronic applications, one of the more promising candidates for low-cost solar cells is chalcopyrite nanocrystals I-III-VI 2 family, especially Cu(In,Ga)Se 2 (3, 5, 6). Based on Cu(In,Ga)Se 2 The photon-to-electron conversion efficiency of thin-film solar cells is as high as 19.9% ​​(13). However, due to supply constraints and incr...

Claims

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