@article{a0e77a6b01414ef9a8ea2c2b3f82da6a,
title = "Monolithic Organic/Colloidal Quantum Dot Hybrid Tandem Solar Cells via Buffer Engineering",
abstract = "Monolithically integrated hybrid tandem solar cells (TSCs) that combine solution-processed colloidal quantum dot (CQD) and organic molecules are a promising device architecture, able to complement the absorption across the visible to the infrared. However, the performance of organic/CQD hybrid TSCs has not yet surpassed that of single-junction CQD solar cells. Here, a strategic optical structure is devised to overcome the prior performance limit of hybrid TSCs by employing a multibuffer layer and a dual near-infrared (NIR) absorber. In particular, a multibuffer layer is introduced to solve the problem of the CQD solvent penetrating the underlying organic layer. In addition, the matching current of monolithic TSCs is significantly improved to 15.2 mA cm−2 by using a dual NIR organic absorber that complements the absorption of CQD. The hybrid TSCs reach a power conversion efficiency (PCE) of 13.7%, higher than that of the corresponding individual single-junction cells, representing the highest efficiency reported to date for CQD-based hybrid TSCs.",
keywords = "colloidal quantum dot solar cells, dual near-infrared absorbers, hybrid tandem solar cells, interface engineering, organic solar cells",
author = "Kim, {Hong Il} and Baek, {Se Woong} and Choi, {Min Jae} and Bin Chen and Olivier Ouellette and Kyoungwon Choi and Benjamin Scheffel and Hyuntae Choi and Margherita Biondi and Sjoerd Hoogland and {Garc{\'i}a de Arquer}, {F. Pelayo} and Taiho Park and Sargent, {Edward H.}",
note = "Funding Information: H.I.K., S.‐W.B., and M.‐J.C. contributed equally to this work. This research was supported by the International Research & Development Program of the National Research Foundation of Korea (NRF): funded by the Ministry of Science and ICT (Grant No. 2018K1A3A1A73057609) and the Centre for Advanced Soft Electronics under the Global Frontier Research Program (2012M3A6A5055225). This work was also supported by the National Research Foundation of Korea (NRF) grant (Code No. 2018R1A2A1A05079144) funded by the Korea government (MSIP) and Natural Sciences and Engineering Research Council (NSERC) of Canada. S.‐W.B. was supported by the National Research Foundation of Korea (NRF) funded by (NRF‐2020R1F1A1068563). Funding Information: H.I.K., S.-W.B., and M.-J.C. contributed equally to this work. This research was supported by the International Research & Development Program of the National Research Foundation of Korea (NRF): funded by the Ministry of Science and ICT (Grant No. 2018K1A3A1A73057609) and the Centre for Advanced Soft Electronics under the Global Frontier Research Program (2012M3A6A5055225). This work was also supported by the National Research Foundation of Korea (NRF) grant (Code No. 2018R1A2A1A05079144) funded by the Korea government (MSIP) and Natural Sciences and Engineering Research Council (NSERC) of Canada. S.-W.B. was supported by the National Research Foundation of Korea (NRF) funded by (NRF-2020R1F1A1068563). Publisher Copyright: {\textcopyright} 2020 Wiley-VCH GmbH",
year = "2020",
month = oct,
day = "1",
doi = "10.1002/adma.202004657",
language = "English (US)",
volume = "32",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-VCH Verlag",
number = "42",
}