Optimized Synthesis of CdTe Nanoplatelets and Photoresponse of CdTe Nanoplatelets Films

Silvia Pedetti (1) , Brice Nadal (2) , Emmanuel Lhuillier (1, 2) , Benoit Mahler (1, 2) , Cécile Bouet (1) , Benjamin Abécassis (3) , Xiangzhen Xu (1) , Benoit Dubertret (1)

1 LPEM - Laboratoire de Physique et d'Etude des Matériaux (UMR 8213)
2 Nexdot
3 LPS - Laboratoire de Physique des Solides

We study in details the synthesis of CdTe nanoplatelets. Three populations of nanoplatelets with a thickness defined with atomic precision are obtained. We show that CdTe nanoplatelets can be extended laterally to obtain nanosheets with lateral dimensions in the micron range. We present the study of the reaction conditions for the formation of CdTe nanoplatelets and for their lateral extensions. The reaction products are analyzed with optical spectroscopy, transmission electron microscopy and small angle X-ray scattering. We investigate the electro-optical properties of films formed with CdTe nanoplatelets, and we show that their current photo-response is better than the one of comparable films formed with CdTe spherical nanocrystals.

Mots clés: CdTe; 2D system; nanoplatelets; current photo-response

Domaines: Matériaux

Silvia Pedetti, Brice Nadal, Emmanuel Lhuillier, Benoit Mahler, Cécile Bouet, et al.. Optimized Synthesis of CdTe Nanoplatelets and Photoresponse of CdTe Nanoplatelets Films. Chemistry of Materials, 2013, 25 (12), pp.2455 - 2462. ⟨10.1021/cm4006844⟩. ⟨hal-01438558⟩