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Nature Communications, volume 11, issue 1, publication number 103

Cascade surface modification of colloidal quantum dot inks enables efficient bulk homojunction photovoltaics

Min Jae Choi 1
F. Pelayo García de Arquer 1
Andrew H. Proppe 1, 2
Ali Seifitokaldani 1
Jongmin CHOI 1
Junghwan Kim 1
Se‐Woong Baek 1
Mengxia Liu 1
Bin Sun 1
Margherita Biondi 1
Benjamin Scheffel 1
Grant Walters 1
Dae-Hyun Nam 1
Jea Woong Jo 1
Olivier Ouellette 1
Sjoerd Hoogland 1
Shana Kelley 2, 3
Yeon Joo Jung 4
1
 
Department of Electrical and Computer Engineering, University of Toronto, Toronto, Canada
2
 
Department of Chemistry, University of Toronto, Toronto, Canada
3
 
Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Canada
Publication typeJournal Article
Publication date2020-01-03
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor16.6
ISSN20411723, 20411723
General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
Abstract
Control over carrier type and doping levels in semiconductor materials is key for optoelectronic applications. In colloidal quantum dots (CQDs), these properties can be tuned by surface chemistry modification, but this has so far been accomplished at the expense of reduced surface passivation and compromised colloidal solubility; this has precluded the realization of advanced architectures such as CQD bulk homojunction solids. Here we introduce a cascade surface modification scheme that overcomes these limitations. This strategy provides control over doping and solubility and enables n-type and p-type CQD inks that are fully miscible in the same solvent with complete surface passivation. This enables the realization of homogeneous CQD bulk homojunction films that exhibit a 1.5 times increase in carrier diffusion length compared with the previous best CQD films. As a result, we demonstrate the highest power conversion efficiency (13.3%) reported among CQD solar cells. It is challenging to realize doping and surface passivation simultaneously in colloidal quantum dot inks. Here Choi et al. employ a cascade surface modification approach to solve the problem and obtain record high efficiency of 13.3% for bulk homojunction solar cells based on these inks.

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GOST |
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GOST Copy
Choi M. J. et al. Cascade surface modification of colloidal quantum dot inks enables efficient bulk homojunction photovoltaics // Nature Communications. 2020. Vol. 11. No. 1. 103
GOST all authors (up to 50) Copy
Choi M. J., Pelayo García de Arquer F., Proppe A. H., Seifitokaldani A., CHOI J., Kim J., Baek S., Liu M., Sun B., Biondi M., Scheffel B., Walters G., Nam D., Jo J. W., Ouellette O., Voznyy O., Hoogland S., Kelley S., Jung Y. J., Sargent E. H. Cascade surface modification of colloidal quantum dot inks enables efficient bulk homojunction photovoltaics // Nature Communications. 2020. Vol. 11. No. 1. 103
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1038/s41467-019-13437-2
UR - https://doi.org/10.1038/s41467-019-13437-2
TI - Cascade surface modification of colloidal quantum dot inks enables efficient bulk homojunction photovoltaics
T2 - Nature Communications
AU - Choi, Min Jae
AU - Pelayo García de Arquer, F.
AU - Proppe, Andrew H.
AU - Seifitokaldani, Ali
AU - CHOI, Jongmin
AU - Kim, Junghwan
AU - Baek, Se‐Woong
AU - Liu, Mengxia
AU - Sun, Bin
AU - Biondi, Margherita
AU - Scheffel, Benjamin
AU - Walters, Grant
AU - Nam, Dae-Hyun
AU - Jo, Jea Woong
AU - Ouellette, Olivier
AU - Voznyy, Oleksandr
AU - Hoogland, Sjoerd
AU - Kelley, Shana
AU - Jung, Yeon Joo
AU - Sargent, Edward H.
PY - 2020
DA - 2020/01/03 00:00:00
PB - Springer Nature
IS - 1
VL - 11
SN - 2041-1723
SN - 2041-1723
ER -
BibTex
Cite this
BibTex Copy
@article{2020_Choi,
author = {Min Jae Choi and F. Pelayo García de Arquer and Andrew H. Proppe and Ali Seifitokaldani and Jongmin CHOI and Junghwan Kim and Se‐Woong Baek and Mengxia Liu and Bin Sun and Margherita Biondi and Benjamin Scheffel and Grant Walters and Dae-Hyun Nam and Jea Woong Jo and Olivier Ouellette and Oleksandr Voznyy and Sjoerd Hoogland and Shana Kelley and Yeon Joo Jung and Edward H. Sargent},
title = {Cascade surface modification of colloidal quantum dot inks enables efficient bulk homojunction photovoltaics},
journal = {Nature Communications},
year = {2020},
volume = {11},
publisher = {Springer Nature},
month = {jan},
url = {https://doi.org/10.1038/s41467-019-13437-2},
number = {1},
doi = {10.1038/s41467-019-13437-2}
}
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