Aggregation‐induced emission (AIE) provides an efficient strategy to synthesize highly luminescent metal nanoclusters (NCs), however, rational control of emission energy and intensity of metal NCs is still challenging. This communication reveals the impact of surface AuI‐thiolate motifs on the AIE properties of Au NCs, by employing a series of water‐soluble glutathione (GSH)‐coordinated Au complexes and NCs as a model ([Au10SR10], [Au15SR13], [Au18SR14], and [Au25SR18]−, SR=thiolate ligand). Spectroscopic investigations show that the emission wavelength of Au NCs is adjustable from visible to the near‐infrared II (NIR‐II) region by controlling the length of the AuI‐SR motifs on the NC surface. Decreasing the length of AuI‐SR motifs also changes the origin of cluster luminescence from AIE‐type phosphorescence to Au0‐core‐dictated fluorescence. This effect becomes more prominent when the degree of aggregation of Au NCs increases in solution.

Recently, various lanthanide ions (Ln 3+ ) have been successfully doped into perovskite quantum dots (PQDs), and the quantum-cutting emission of 2 F 5/2 − 2 F 7/2 for Yb 3+ with a measurable inner efficiency of more than 100% has been discovered and applied as the luminescent converter of solar cells, which has opened a new branch for the application of PQDs. In this work, to further improve the quantum-cutting efficiency of Yb 3+ , the codoping and tridoping methods were used to improve the quantum-cutting emission of PQDs. The Yb 3+ −Ln 3+ (Ln = Nd, Dy, Tb, Pr, Ce) pair-doped CsPbCl x Br y I 3−x−y PQDs were fabricated, with all displaying excitonic emission, narrowband emission of Ln 3+ ions, and quantum-cutting emission of Yb 3+ ions. It was interesting that Yb 3+ −Pr 3+ as well as Yb 3+ −Ce 3+ pairs could effectively sensitize the emission of Yb 3+ , owing to Pr 3+ and Ce 3+ ions offering intermediate energy states close to the exciton transition energy of the PQDs. After host composition optimization and tridoping investigation, overall emissions with a 173% photoluminescence quantum yield (PLQY) were obtained in the Yb 3+ −Pr 3+ −Ce 3+ -tridoped CsPbClBr 2 PQDs. Then, the tridoped PQDs were designed as the down-converter for CuIn 1−x Ga x Se 2 (CIGS) as well as the silicon solar cells, which leads to an enhancement of the power conversion efficiency (PCE) of as high as ∼20%. The modified CIGS was further employed to charge the smart mobile phone, which could largely shorten the charging time from 180 to 150 min. This finding is of great significant for expanding the application fields of the impurity-doped PQDs.

Nitrogen-enriched porous carbon nanofiber networks (NPCNFs) were successfully prepared by using lowcost melamine and polyacrylonitrile as precursors via electrospinning followed by carbonization and NH 3 treatments. The NPCNFs exhibited inter-connected nanofibrous morphology with a large specific surface area, well-developed microporous structure, relatively high-level nitrogen doping and great amount of pyridinic nitrogen. As free-standing new anode materials in lithium-ion batteries (LIBs), the NPCNFs showed ultrahigh capacity, good cycle performance and superior rate capability with a reversible capacity of as high as 1323 mA h g À1 at a current density of 50 mA g À1 . These attractive characteristics make the NPCNFs materials very promising anode candidates for high-performance LIBs and, as free-standing electrode materials to be used in other energy conversion and storage devices.