01993nas a2200193   4500008004100000022001400041245010200055210006900157260000800226300001500234490000700249520128400256100001801540700001701558700002801575700003301603700003301636856013001669       2018                        eng d  a1144-054600aComposite thin film of simultaneously formed carbon and SnO2 QDs for supercapacitance application0 aComposite thin film of simultaneously formed carbon and SnO2 QDs  cMAR  a 8823-88300 v423 aComposite material with uniform size and structure is a critical asset that decides its properties like charge transfer, thermal, photoluminescence, mechanical, etc. and consequently the applications. Here for the first time, we report the concept of flame/combustion at liquid-liquid interface to synthesize in situ, thin film formation of composite consisting of two or more quantum dots. Synthesis of thin films of a composite containing C and SnO2 QDs having particle sizes below 3 nm was successfully done. As compared to a single quantum dots system, the formed composite showed significantly improved specific capacitance due to the synergistic effect arising from strong interaction between C and SnO2 QDs. This was confirmed by XPS, UV visible spectroscopy and photoluminescence spectra. Moreover, it was confirmed that even after 1000 charge/discharge cycles, the interaction between C and Sn remained unaltered; indicating significant stability of capacitance. Some of the advantages of this method include one step, eco-friendly process at ambient conditions. The generality of the method was established by synthesizing C-ZnO and C-TiO2 composite thin film. This new approach can be extended to form many other valuable composite thin films for various applications.1 aJadhav, Aarti1 aPatil, Sagar1 aPatil, Kashinath, Rangu1 aSathaye, Shivaram, Dattatray1 aRode, Chandrashekhar, Vasant  uhttps://library.ncl.res.in/content/composite-thin-film-simultaneously-formed-carbon-and-sno2-qds-supercapacitance-application