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Title: Bi-continuous Multi-component Nanocrystal Superlattices for Solar Energy Conversion

Abstract

Our SISGR program studied an emerging class of nanomaterials wherein different combinations of semiconductor or semiconductor and plasmonic nanocrystals (NCs) are self-assembled into three-dimensional multi-component superlattices. The NC assemblies were designed to form bicontinuous semiconductor NC sublattices with type-II energy offsets to drive charge separation onto electron and hole transporting sublattices for collection and introduce plasmonic NCs to increase solar absorption and charge separation. Our group is expert in synthesizing and assembling an extraordinary variety of artificial systems by tailoring the NC building blocks and the superlattice unit cell geometry. Under this DOE BES Materials Chemistry program, we introduced chemical methods to control inter-particle distance and to dope NC assemblies, which enabled our demonstration of strong electronic communication between NCs and the use of NC thin films as electronic materials. We synthesized, assembled and structurally, spectroscopically, and electrically probed NC superlattices to understand and manipulate the flow of energy and charge toward discovering the design rules and optimizing these complex architectures to create materials that efficiently convert solar radiation into electricity.

Authors:
 [1];  [1];  [1];  [1]
  1. University of Pennsylvania
Publication Date:
Research Org.:
University of Pennsylvania
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1363815
Report Number(s):
DOE-PENN-2158
DOE Contract Number:
SC0002158
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 14 SOLAR ENERGY; nanocrystal, assembly, charge transfer, charge transport

Citation Formats

Kagan, Cherie, Murray, Christopher, Kikkawa, James, and Engheta, Nader. Bi-continuous Multi-component Nanocrystal Superlattices for Solar Energy Conversion. United States: N. p., 2017. Web. doi:10.2172/1363815.
Kagan, Cherie, Murray, Christopher, Kikkawa, James, & Engheta, Nader. Bi-continuous Multi-component Nanocrystal Superlattices for Solar Energy Conversion. United States. doi:10.2172/1363815.
Kagan, Cherie, Murray, Christopher, Kikkawa, James, and Engheta, Nader. Wed . "Bi-continuous Multi-component Nanocrystal Superlattices for Solar Energy Conversion". United States. doi:10.2172/1363815. https://www.osti.gov/servlets/purl/1363815.
@article{osti_1363815,
title = {Bi-continuous Multi-component Nanocrystal Superlattices for Solar Energy Conversion},
author = {Kagan, Cherie and Murray, Christopher and Kikkawa, James and Engheta, Nader},
abstractNote = {Our SISGR program studied an emerging class of nanomaterials wherein different combinations of semiconductor or semiconductor and plasmonic nanocrystals (NCs) are self-assembled into three-dimensional multi-component superlattices. The NC assemblies were designed to form bicontinuous semiconductor NC sublattices with type-II energy offsets to drive charge separation onto electron and hole transporting sublattices for collection and introduce plasmonic NCs to increase solar absorption and charge separation. Our group is expert in synthesizing and assembling an extraordinary variety of artificial systems by tailoring the NC building blocks and the superlattice unit cell geometry. Under this DOE BES Materials Chemistry program, we introduced chemical methods to control inter-particle distance and to dope NC assemblies, which enabled our demonstration of strong electronic communication between NCs and the use of NC thin films as electronic materials. We synthesized, assembled and structurally, spectroscopically, and electrically probed NC superlattices to understand and manipulate the flow of energy and charge toward discovering the design rules and optimizing these complex architectures to create materials that efficiently convert solar radiation into electricity.},
doi = {10.2172/1363815},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 14 00:00:00 EDT 2017},
month = {Wed Jun 14 00:00:00 EDT 2017}
}

Technical Report:

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