skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Composite Nature of Layered Hybrid Perovskites: Assessment on Quantum and Dielectric Confinements and Band Alignment

Abstract

Layered hybrid organic–inorganic perovskites (HOPs) have re-emerged as potential technological solutions for next-generation photovoltaic and optoelectronic applications. Their two-dimensional (2D) nature confers them a significant flexibility and results in the appearance of quantum and dielectric confinements. Such confinements are at the origin of their fascinating properties, and understanding them from a fundamental level is of paramount importance for optimization. Here, we provide an in-depth investigation of band alignments of 2D HOP allowing access to carriers’ confinement potentials. 2D HOPs are conceptualized as composite materials in which pseudoinorganic and -organic components are defined. In this way, computational modeling of band alignments becomes affordable using first-principles methods. First, we show that the composite approach is suitable to study the position-dependent dielectric profiles and enables clear differentiation of the respective contributions of inorganic and organic components. Then we apply the composite approach to a variety of 2D HOPs, assessing the impact on the confinement potentials of well and barrier thickness, of the nature of the inorganic well, and of structural transitions. Using the deduced potentials, we further discuss the limitations of the effective mass approximation, scrutinizing the electronic properties of this family of composite materials. Our simulations demonstrate type-I dominant band alignment inmore » 2D HOPs. Finally, we outline design principles on band alignment toward achieving specific optoelectronic properties. Furthermore, we present alternative theoretical methods to inspect the properties of 2D hybrid perovskites and expect that the composite approach will be applicable to other classes of layered materials.« less

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [1]; ORCiD logo [3];  [3]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [4]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. Rennes, Rennes (France)
  2. Univ. Rennes, Rennes (France); TOTAL SA, Courbevoie (France)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Northwestern Univ., Evanston, IL (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1440494
Report Number(s):
LA-UR-18-20159
Journal ID: ISSN 1936-0851
Grant/Contract Number:
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Nano
Additional Journal Information:
Journal Volume: 12; Journal Issue: 4; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science; Perovskite, theory, quantum and dielectric confinement

Citation Formats

Traore, Boubacar, Pedesseau, Laurent, Assam, Linda, Che, Xiaoyang, Blancon, Jean -Christophe Robert, Tsai, Hsinhan, Nie, Wanyi, Stoumpos, Constantinos C., Kanatzidis, Mercouri G., Tretiak, Sergei, Mohite, Aditya D., Even, Jacky, Kepenekian, Mikael, and Katan, Claudine. Composite Nature of Layered Hybrid Perovskites: Assessment on Quantum and Dielectric Confinements and Band Alignment. United States: N. p., 2018. Web. doi:10.1021/acsnano.7b08202.
Traore, Boubacar, Pedesseau, Laurent, Assam, Linda, Che, Xiaoyang, Blancon, Jean -Christophe Robert, Tsai, Hsinhan, Nie, Wanyi, Stoumpos, Constantinos C., Kanatzidis, Mercouri G., Tretiak, Sergei, Mohite, Aditya D., Even, Jacky, Kepenekian, Mikael, & Katan, Claudine. Composite Nature of Layered Hybrid Perovskites: Assessment on Quantum and Dielectric Confinements and Band Alignment. United States. doi:10.1021/acsnano.7b08202.
Traore, Boubacar, Pedesseau, Laurent, Assam, Linda, Che, Xiaoyang, Blancon, Jean -Christophe Robert, Tsai, Hsinhan, Nie, Wanyi, Stoumpos, Constantinos C., Kanatzidis, Mercouri G., Tretiak, Sergei, Mohite, Aditya D., Even, Jacky, Kepenekian, Mikael, and Katan, Claudine. Mon . "Composite Nature of Layered Hybrid Perovskites: Assessment on Quantum and Dielectric Confinements and Band Alignment". United States. doi:10.1021/acsnano.7b08202.
@article{osti_1440494,
title = {Composite Nature of Layered Hybrid Perovskites: Assessment on Quantum and Dielectric Confinements and Band Alignment},
author = {Traore, Boubacar and Pedesseau, Laurent and Assam, Linda and Che, Xiaoyang and Blancon, Jean -Christophe Robert and Tsai, Hsinhan and Nie, Wanyi and Stoumpos, Constantinos C. and Kanatzidis, Mercouri G. and Tretiak, Sergei and Mohite, Aditya D. and Even, Jacky and Kepenekian, Mikael and Katan, Claudine},
abstractNote = {Layered hybrid organic–inorganic perovskites (HOPs) have re-emerged as potential technological solutions for next-generation photovoltaic and optoelectronic applications. Their two-dimensional (2D) nature confers them a significant flexibility and results in the appearance of quantum and dielectric confinements. Such confinements are at the origin of their fascinating properties, and understanding them from a fundamental level is of paramount importance for optimization. Here, we provide an in-depth investigation of band alignments of 2D HOP allowing access to carriers’ confinement potentials. 2D HOPs are conceptualized as composite materials in which pseudoinorganic and -organic components are defined. In this way, computational modeling of band alignments becomes affordable using first-principles methods. First, we show that the composite approach is suitable to study the position-dependent dielectric profiles and enables clear differentiation of the respective contributions of inorganic and organic components. Then we apply the composite approach to a variety of 2D HOPs, assessing the impact on the confinement potentials of well and barrier thickness, of the nature of the inorganic well, and of structural transitions. Using the deduced potentials, we further discuss the limitations of the effective mass approximation, scrutinizing the electronic properties of this family of composite materials. Our simulations demonstrate type-I dominant band alignment in 2D HOPs. Finally, we outline design principles on band alignment toward achieving specific optoelectronic properties. Furthermore, we present alternative theoretical methods to inspect the properties of 2D hybrid perovskites and expect that the composite approach will be applicable to other classes of layered materials.},
doi = {10.1021/acsnano.7b08202},
journal = {ACS Nano},
number = 4,
volume = 12,
place = {United States},
year = {Mon Feb 26 00:00:00 EST 2018},
month = {Mon Feb 26 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on February 26, 2019
Publisher's Version of Record

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Save / Share: