Induced growth of CsPbBr3 perovskite films by incorporating metal chalcogenide quantum dots in PbBr2 films for performance enhancement of inorganic perovskite solar cells

Eui Jin Lee; Dae Hwan Kim; Robert P.H. Chang; Dae Kue Hwang

doi:10.1021/acsaem.0c01152

Induced growth of CsPbBr₃ perovskite films by incorporating metal chalcogenide quantum dots in PbBr₂ films for performance enhancement of inorganic perovskite solar cells

Eui Jin Lee, Dae Hwan Kim, Robert P.H. Chang, Dae Kue Hwang^*

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Cesium lead bromide (CsPbBr₃), an inorganic perovskite material with a large band gap energy (E_g = 2.3 eV), is a great candidate to produce stable and semitransparent perovskite solar cell (PSC) platforms owing to its complete and stable perovskite structure in humid environments. We synthesized quantum dots (QDs) composed of five atoms, copper (Cu), zinc (Zn), indium (In), sulfur (S), and selenium (Se; CZISSe QDs), and incorporated them into CsPbBr₃ inorganic perovskite films. To enable the dispersion of CsPbBr₃-capped CZISSe QDs in a PbBr₂ solution, we used the ligand-exchange method to substitute an inorganic CsPbBr₃ shell instead of the long organic capping chains. CZISSe QDs functioned as crystal nuclei seeds in the PbBr₂ film and promoted the crystallization of CsPbBr₃. Furthermore, they were present in the mesoporous TiO₂-CsPbBr₃ perovskite layer, improving the extraction and transport of electrons from the CsPbBr₃ light absorption layer to the TiO₂. Consequently, the power conversion efficiency of the QD-containing inorganic PSC was enhanced by 20.6% compared to that of the QD-free PSC.

Original language	English (US)
Pages (from-to)	10376-10383
Number of pages	8
Journal	ACS Applied Energy Materials
Volume	3
Issue number	11
DOIs	https://doi.org/10.1021/acsaem.0c01152
State	Published - Nov 23 2020

Funding

This work was supported by the DGSIT R&D Program of the Ministry of Science and ICT of Korea (19-ET-01), the Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea (nos. 2016M1A2A2936781 and 2020R1A2C201091611).

Keywords

CZISSe quantum dots
Cesium lead bromide perovskite
Charge transport
Inorganic perovskite solar cells
Ligand exchange

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Energy Engineering and Power Technology
Electrochemistry
Materials Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acsaem.0c01152

Cite this

@article{b68a78843d2e45448a8c295f8b53079c,

title = "Induced growth of CsPbBr3 perovskite films by incorporating metal chalcogenide quantum dots in PbBr2 films for performance enhancement of inorganic perovskite solar cells",

abstract = "Cesium lead bromide (CsPbBr3), an inorganic perovskite material with a large band gap energy (Eg = 2.3 eV), is a great candidate to produce stable and semitransparent perovskite solar cell (PSC) platforms owing to its complete and stable perovskite structure in humid environments. We synthesized quantum dots (QDs) composed of five atoms, copper (Cu), zinc (Zn), indium (In), sulfur (S), and selenium (Se; CZISSe QDs), and incorporated them into CsPbBr3 inorganic perovskite films. To enable the dispersion of CsPbBr3-capped CZISSe QDs in a PbBr2 solution, we used the ligand-exchange method to substitute an inorganic CsPbBr3 shell instead of the long organic capping chains. CZISSe QDs functioned as crystal nuclei seeds in the PbBr2 film and promoted the crystallization of CsPbBr3. Furthermore, they were present in the mesoporous TiO2-CsPbBr3 perovskite layer, improving the extraction and transport of electrons from the CsPbBr3 light absorption layer to the TiO2. Consequently, the power conversion efficiency of the QD-containing inorganic PSC was enhanced by 20.6% compared to that of the QD-free PSC.",

keywords = "CZISSe quantum dots, Cesium lead bromide perovskite, Charge transport, Inorganic perovskite solar cells, Ligand exchange",

author = "Lee, {Eui Jin} and Kim, {Dae Hwan} and Chang, {Robert P.H.} and Hwang, {Dae Kue}",

note = "Publisher Copyright: {\textcopyright} 2020 American Chemical Society",

year = "2020",

month = nov,

day = "23",

doi = "10.1021/acsaem.0c01152",

language = "English (US)",

volume = "3",

pages = "10376--10383",

journal = "ACS Applied Energy Materials",

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Induced growth of CsPbBr₃ perovskite films by incorporating metal chalcogenide quantum dots in PbBr₂ films for performance enhancement of inorganic perovskite solar cells. / Lee, Eui Jin; Kim, Dae Hwan; Chang, Robert P.H. et al.
In: ACS Applied Energy Materials, Vol. 3, No. 11, 23.11.2020, p. 10376-10383.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Induced growth of CsPbBr3 perovskite films by incorporating metal chalcogenide quantum dots in PbBr2 films for performance enhancement of inorganic perovskite solar cells

AU - Lee, Eui Jin

AU - Kim, Dae Hwan

AU - Chang, Robert P.H.

AU - Hwang, Dae Kue

PY - 2020/11/23

Y1 - 2020/11/23

N2 - Cesium lead bromide (CsPbBr3), an inorganic perovskite material with a large band gap energy (Eg = 2.3 eV), is a great candidate to produce stable and semitransparent perovskite solar cell (PSC) platforms owing to its complete and stable perovskite structure in humid environments. We synthesized quantum dots (QDs) composed of five atoms, copper (Cu), zinc (Zn), indium (In), sulfur (S), and selenium (Se; CZISSe QDs), and incorporated them into CsPbBr3 inorganic perovskite films. To enable the dispersion of CsPbBr3-capped CZISSe QDs in a PbBr2 solution, we used the ligand-exchange method to substitute an inorganic CsPbBr3 shell instead of the long organic capping chains. CZISSe QDs functioned as crystal nuclei seeds in the PbBr2 film and promoted the crystallization of CsPbBr3. Furthermore, they were present in the mesoporous TiO2-CsPbBr3 perovskite layer, improving the extraction and transport of electrons from the CsPbBr3 light absorption layer to the TiO2. Consequently, the power conversion efficiency of the QD-containing inorganic PSC was enhanced by 20.6% compared to that of the QD-free PSC.

AB - Cesium lead bromide (CsPbBr3), an inorganic perovskite material with a large band gap energy (Eg = 2.3 eV), is a great candidate to produce stable and semitransparent perovskite solar cell (PSC) platforms owing to its complete and stable perovskite structure in humid environments. We synthesized quantum dots (QDs) composed of five atoms, copper (Cu), zinc (Zn), indium (In), sulfur (S), and selenium (Se; CZISSe QDs), and incorporated them into CsPbBr3 inorganic perovskite films. To enable the dispersion of CsPbBr3-capped CZISSe QDs in a PbBr2 solution, we used the ligand-exchange method to substitute an inorganic CsPbBr3 shell instead of the long organic capping chains. CZISSe QDs functioned as crystal nuclei seeds in the PbBr2 film and promoted the crystallization of CsPbBr3. Furthermore, they were present in the mesoporous TiO2-CsPbBr3 perovskite layer, improving the extraction and transport of electrons from the CsPbBr3 light absorption layer to the TiO2. Consequently, the power conversion efficiency of the QD-containing inorganic PSC was enhanced by 20.6% compared to that of the QD-free PSC.

KW - CZISSe quantum dots

KW - Cesium lead bromide perovskite

KW - Charge transport

KW - Inorganic perovskite solar cells

KW - Ligand exchange

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