The important parameters for the synthesis of indium phosphide nanocrystals (InP NCs) are examined in a continuous three‐stage microfluidic system (see figure). InP NC growth is largely independent of the experimental parameters that are significant in CdSe NC syntheses, such as mixing temperature and reagent concentrations. However, the concentration of myristic acid (MA) is important role for the growth of InP NCs.

We present a fully continuous chip microreactor-based multistage platform for the synthesis of quantum dots with heterostructures. The use of custom-designed chip reactors enables precise control of heating profiles and flow distribution across the microfluidic channels while conducting multistep reactions. The platform can be easily reconfigured by reconnecting the differently designed chip reactors allowing for screening of various reaction parameters during the synthesis of nanocrystals. III-V core/shell quantum dots are chosen as model reaction systems, including InP/ZnS, InP/ZnSe, InP/CdS and InAs/InP, which are prepared in flow using a maximum of six chip reactors in series.

Die relevanten Parameter für die Synthese von Indiumphosphid‐Nanokristallen wurden mit dem gezeigten Mikrofluidiksystem ermittelt. Das Wachstum der InP‐Nanokristalle ist weitgehend unabhängig von vielen experimentellen Parametern, die bei der Synthese von CdSe‐Nanokristallen wichtig sind, z. B. Mischtemperatur und Reagentienkonzentration. Dagegen spielt die Konzentration der Myristinsäure (MA) eine wichtige Rolle beim Wachstum von InP‐Nanokristallen.