TY - JOUR
T1 - Room-temperature direct synthesis of semi-conductive PbS nanocrystal inks for optoelectronic applications
AU - Wang, Yongjie
AU - Liu, Zeke
AU - Huo, Nengjie
AU - Li, Fei
AU - Gu, Mengfan
AU - Ling, Xufeng
AU - Zhang, Yannan
AU - Lu, Kunyuan
AU - Han, Lu
AU - Fang, Honghua
AU - Shulga, Artem G.
AU - Xue, Ye
AU - Zhou, Sijie
AU - Yang, Fan
AU - Tang, Xun
AU - Zheng, Jiawei
AU - Antonietta Loi, Maria
AU - Konstantatos, Gerasimos
AU - Ma, Wanli
N1 - Funding Information:
This work was supported by the National Key Research Projects (Grant No. 2016YFA0202402), the Natural Science Foundation of Jiangsu Province of China (BK20170337), the National Natural Science Foundation of China (Grant No. 61674111), and “111” projects. The author thanks the Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University. We also acknowledge the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). G.K. acknowledges financial support from Fundacio Privada Cellex, the program CERCA and from the Spanish Ministry of Economy and Competitiveness, through the “Severo Ochoa” Programme for Centres of Excellence in R&D (SEV-2015-0522). This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 754558.
Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Lead sulphide (PbS) nanocrystals (NCs) are promising materials for low-cost, high-performance optoelectronic devices. So far, PbS NCs have to be first synthesized with long-alkyl chain organic surface ligands and then be ligand-exchanged with shorter ligands (two-steps) to enable charge transport. However, the initial synthesis of insulated PbS NCs show no necessity and the ligand-exchange process is tedious and extravagant. Herein, we have developed a direct one-step, scalable synthetic method for iodide capped PbS (PbS-I) NC inks. The estimated cost for PbS-I NC inks is decreased to less than 6 $·g−1, compared with 16 $·g−1 for conventional methods. Furthermore, based on these PbS-I NCs, photodetector devices show a high detectivity of 1.4 × 1011Jones and solar cells show an air-stable power conversion efficiency (PCE) up to 10%. This scalable and low-cost direct preparation of high-quality PbS-I NC inks may pave a path for the future commercialization of NC based optoelectronics.
AB - Lead sulphide (PbS) nanocrystals (NCs) are promising materials for low-cost, high-performance optoelectronic devices. So far, PbS NCs have to be first synthesized with long-alkyl chain organic surface ligands and then be ligand-exchanged with shorter ligands (two-steps) to enable charge transport. However, the initial synthesis of insulated PbS NCs show no necessity and the ligand-exchange process is tedious and extravagant. Herein, we have developed a direct one-step, scalable synthetic method for iodide capped PbS (PbS-I) NC inks. The estimated cost for PbS-I NC inks is decreased to less than 6 $·g−1, compared with 16 $·g−1 for conventional methods. Furthermore, based on these PbS-I NCs, photodetector devices show a high detectivity of 1.4 × 1011Jones and solar cells show an air-stable power conversion efficiency (PCE) up to 10%. This scalable and low-cost direct preparation of high-quality PbS-I NC inks may pave a path for the future commercialization of NC based optoelectronics.
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U2 - 10.1038/s41467-019-13158-6
DO - 10.1038/s41467-019-13158-6
M3 - Article
C2 - 31723126
AN - SCOPUS:85074960238
VL - 10
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 5136
ER -