DataVXACS Applied Nano MaterialsPaper
journal article·2026-06-05

Orchestrating Collective Emission in Upconversion Nanocrystals via Ion-Specific Surface Segregation

Guiping Ren, Zhijing Zhu, Yuenan Zhang, Hongying Bao, Li Sun, Zoujun Peng, Shuyan Qi, Yiqian Yang, Hao Peng, Fang Yang, Aiguo Wu

ACS Applied Nano Materials· Volume 9· Issue 22
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Source abstract

Abstract

Conventional characterization of nanomaterial optics relies on ensemble averaging, an approach that masks the decisive contribution of individual nanoparticle properties to the collective optical behavior. To resolve this, we introduce an In 3+ surface segregation strategy that yields exceptionally uniform NaGdF 4:Er nanoparticles (coefficient of variation of 3.36%). Using this well-defined model system, we delineate two distinct mechanisms through which minimized heterogeneity (in size) dictates ensemble behavior: it (i) suppresses size-dependent interparticle energy transfer, which stabilizes spectral output (e.g., reducing the 4 S 3/2 -to- 2 H 11/2 intensity ratio by up to 28%), and (ii) synchronizes emission kinetics under 980 nm pulsed excitation, leading to an enhancement of pulse response sensitivity by up to 26.7-fold. This work establishes precise control over intrinsic heterogeneity as a fundamental and quantifiable design parameter, providing a general principle for tailoring light–matter interactions in nanocrystal ensembles and enabling the predictive design of tailored collective optical phenomena.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Luminescence Properties of Advanced Materials · Ion-surface interactions and analysis · Luminescence and Fluorescent Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology, Laboratory of Advanced Theranostic Materials and Technology, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering

Chinese Academy of Sciences

Zhejiang International Cooperation Base of Biomedical Materials Technology and Application, Zhejiang Engineering Research Center for Biomedical Materials

Ningbo Cixi Institute of Biomedical Engineering

University of Chinese Academy of Sciences

Funding

Youth Innovation Promotion Association of the Chinese Academy of Sciences · International Science and Technology Cooperation Programme · National Science and Technology Major Project · Natural Science Foundation of Zhejiang Province · Key Science and Technology Project of Ministry of Emergency Management of the People's Republic of China · Special Exchange Pro-gram of Chinese Academy of Sciences · National Basic Research Program of China (973 Program) · National Natural Science Foundation of China (NSFC) · ?Innovation Yongjiang 2035? Key R&D Program of Ningbo

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