Recently, single-crystalline indium phosphide (InP) tetrapods, which allow an exciton to act in a true tetrapodal geometry, were successfully synthesized and proved as a useful platform to study multiple exciton behaviors. We used ZnCl 2 precursor, a commonly used additive in the synthesis of aminophosphinebased InP nanocrystals to enhance the optical performance, and successfully synthesized InP tetrapods (InP-ZnCl 2 ) with the narrower arm length distribution. Interestingly, no distinct enhancement in photoluminescence was observed while the arm length of the InP tetrapod was suppressed with the addition of ZnCl 2 . Further shell growth on InP-ZnCl 2 successfully preserved tetrapodal geometry in InP-ZnCl 2 /ZnSe and showed higher photoluminescence than that of tetrapodal InP/ZnSe. The crystal structure of InP-ZnCl 2 was also retained even along with various Zn feed ratios as observed in x-ray diffraction (XRD) patterns and showed no peak shift as Zn only passivates the surface of InP tetrapods. These results provide a platform to study the role of Zn precursor.