Automated synthesis of InSb quantum dots with improved batch-to-batch reproducibility via kinetically matched co-reduction
Yangning Zhang, Hyeong Woo Ban, Pan Xia, Yang Bai, Sile Hu, Filip Dinic, Chang Liu, Yixi Li, Ehsan Nikbin, Shea Sanvordenker, Muhammad Imran, Benjamin Rehl, Lewei Zeng, Sjoerd Hoogland, Xiao Qi, Brian A Korgel, Emory Chan, Edward H Sargent · 2026
Read Automated synthesis of InSb quantum dots with improved batch-to-batch reproducibility via kinetically matched co-reduction by Yangning Zhang, Hyeong Woo Ban, Pan Xia, Yang Bai, Sile Hu, Filip Dinic, Chang Liu, Yixi Li, Ehsan Nikbin, Shea Sanvordenker, Muhammad Imran, Benjamin Rehl, Lewei Zeng, Sjoerd Hoogland, Xiao Qi, Brian A Korgel, Emory Chan, Edward H Sargent (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13396766.txt.
Description
Zhang and co-authors automate, in 2026, the making of indium antimonide quantum dots, heavy-metal-free absorbers for infrared sensing whose hand-made batches vary so much. The bottleneck is kinetic: the indium and antimony starter chemicals reduce at overlapping times, tangling nucleation with growth and widening dot sizes. Their robotic workflow maps the reaction closely, finding that an indium-rich mix compensates for the antimony precursor's faster reduction, a matched co-reduction pathway.
By tuning the indium-to-antimony ratio and reducing agent supply, they steered dot size so the first absorption peak swept from 1120 to 1650 nanometers across the short-wave infrared range. Optimized dots had a bandgap of 0.825 electron volts and a Stokes shift of just 32 millielectron volts, among the smallest reported for this material. Automation halved size spread and improved batch-to-batch consistency sixfold against manual synthesis, with photoluminescence peaks landing within 5 nanometers of target.
Catalog record
| CREATOR | Yangning Zhang, Hyeong Woo Ban, Pan Xia, Yang Bai, Sile Hu, Filip Dinic, Chang Liu, Yixi Li, Ehsan Nikbin, Shea Sanvordenker, Muhammad Imran, Benjamin Rehl, Lewei Zeng, Sjoerd Hoogland, Xiao Qi, Brian A Korgel, Emory Chan, Edward H Sargent |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 53 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |