Journal Article

IMPULSE-2022-00083

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Matrix Manipulation of Directly‐Synthesized PbS Quantum Dot Inks Enabled by Coordination Engineering

Li, F. ; Liu, Y. ; Shi, G. ; Chen, W. ; Guo, R. ; Liu, D. ; Zhang, Y. ; Wang, Y. ; Meng, X. ; Zhang, X. ; Lv, Y. ; Deng, W. ; Zhang, Q. ; Shi, Y. ; Chen, Y. ; Wang, K. ; Shen, Q. ; Liu, Z. ; Müller-Buschbaum, P.MLZ* ; Ma, W.

2021
Wiley-VCH Weinheim

Please use a persistent id in citations: doi:10.1002/adfm.202104457

Abstract: The direct-synthesis of conductive PbS quantum dot (QD) ink is facile, scalable, and low-cost, boosting the future commercialization of optoelectronics based on colloidal QDs. However, manipulating the QD matrix structures still is a challenge, which limits the corresponding QD solar cell performance. Here, for the first time a coordination-engineering strategy to finely adjust the matrix thickness around the QDs is presented, in which halogen salts are introduced into the reaction to convert the excessive insulating lead iodide into soluble iodoplumbate species. As a result, the obtained QD film exhibits shrunk insulating shells, leading to higher charge carrier transport and superior surface passivation compared to the control devices. A significantly improved power-conversion efficiency from 10.52% to 12.12% can be achieved after the matrix engineering. Therefore, the work shows high significance in promoting the practical application of directly synthesized PbS QD inks in large-area low-cost optoelectronic devices.

Keyword(s): Energy (1st) ; Condensed Matter Physics (2nd) ; Chemistry (2nd)

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Contributing Institute(s):

1. E13 (E13)
2. Heinz Maier-Leibnitz Zentrum (MLZ)

Experiment(s):

1. No specific instrument

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 15 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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