Solution-based \textit{in-situ} synthesis and fabrication of ultrasensitive CdSe photoconductors

Solution-based semiconductor device fabrication offers the advantages of low cost, large area coverage, control of morphology, and simplified doping. Here, we present a novel solution-based \textit{in-situ} synthesis and film fabrication method demonstrated for CdSe films, where both the quantum dot (QD) synthesis and bulk film formation occurs simultaneously on a substrate in ambient atmosphere. The films fabricated using this method exhibit high photoconductive gain while retaining a relatively high signal bandwidth. We will present the synthetic route, as well as our studies of steady-state and transient photoconductivity that elucidate the mechanisms underlying the photoconductive gain and the role of carrier density on the carrier transport