02586nas a2200325   4500008004100000022001400041245011200055210006900167260000800236300001200244490000800256520159300264653002001857653001301877653001801890653000801908653000801916100001601924700002001940700001801960700002101978700002401999700001902023700001902042700001702061700002002078700001802098700002002116856012402136       2019                        eng d  a1862-630000aSolvothermal growth of PbBi2Se4 nano-flowers: a material for humidity sensor and photodetector applications0 aSolvothermal growth of PbBi2Se4 nanoflowers a material for humid  cJUN  a19000650 v2163 a<p>In the present work, lead bismuth selenide (PbBi2Se4) nano-flowers are synthesized by using a simple solvothermal method. Humidity sensor and photodetector based on PbBi2Se4 nano-flowers are fabricated on indium tin oxide (ITO) substrates and their sensing properties are investigated. Formation of PbBi2Se4 is confirmed by XRD, EDS, and XPS whereas formation of nano-flowers is confirmed by SEM and TEM analysis. XRD analysis reveals the hexagonal crystal structure of PbBi2Se4 phase with a = b = 4.22 angstrom, and c= 17.42 angstrom. The surface morphology of PbBi2Se4 clearly shows the formation of well-organized flower-like nanostructures which closely resembles the shape of Dahlia. The elemental mapping of chemical constituents obtained from SEM-EDS analysis shows uniform distribution of chemical constituents for the Pb, Bi, and Se in PbBi2Se4 nano-flowers. The PbBi2Se4 nano-flowers based humidity sensor has a typical response time of approximate to 65s and recovery time of approximate to 75 s. In case of PbBi2Se4 nano-flowers-based photodetector, the response and recovery time are observed approximate to 121 and approximate to 123 s, respectively, under visible light illumination with photoresponsivity (5 x 10(-6)), photosensitivity (2.16%), and quantum efficiency (1.5 x 10(4)). The obtained results demonstrate the potential applications of solvothermally grown PbBi2Se4 nano-flowers-based devices for humidity sensors and photodetectors. The ease of the present work is to develop novel material to obtain device quality humidity sensors and photodetectors.</p>
10ahumidity sensor10aPbBi2Se410aphotodetector10aXPS10aXRD1 aAher, Rahul1 aBhorde, Ajinkya1 aNair, Shruthi1 aBorate, Haribhau1 aPandharkar, Subhash1 aNaik, Dhirsing1 aVairale, Priti1 aKarpe, Smita1 aLate, Dattatray1 aPrasad, Mohit1 aJadkar, Sandesh  uhttps://library.ncl.res.in/content/solvothermal-growth-pbbi2se4-nano-flowers-material-humidity-sensor-and-photodetector