Fabrication of All-Inorganic Nanocrystal Solids through Matrix Encapsulation of Nanocrystal Arrays
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- 作者：Erich Kinder ; Pavel Moroz ; Geoffrey Diederich ; Alexa Johnson ; Maria Kirsanova ; Alexander Nemchinov ; Timothy O鈥機onnor ; Dan Roth ; Mikhail Zamkov
- 刊名：Journal of the American Chemical Society
- 出版年：2011
- 出版时间：December 21, 2011
- 年：2011
- 卷：133
- 期：50
- 页码：20488-20499
- 全文大小：1302K
- 年卷期：v.133,no.50(December 21, 2011)
- ISSN：1520-5126
文摘
A general strategy for low-temperature processing of colloidal nanocrystals into all-inorganic films is reported. The present methodology goes beyond the traditional ligand-interlinking scheme and relies on encapsulation of morphologically defined nanocrystal arrays into a matrix of a wide-band gap semiconductor, which preserves optoelectronic properties of individual nanoparticles while rendering the nanocrystal film photoconductive. Fabricated solids exhibit excellent thermal stability, which is attributed to the heteroepitaxial structure of nanocrystal鈥搈atrix interfaces, and show compelling light-harvesting performance in prototype solar cells.