Growth technology, X-ray and optical properties of CdSe thin films

Structural, optical and electrical characterization of chemically deposited CdSe thin films

“…The band gap 'Eg' was determined by extra plotting the straight line to the energy axis whose intercept to the x-axis gives the optical band gap. The band gap of CdSe film was found to be 1.7 eV which agrees with earlier investigators report [11,14,22,25,35].…”

“…The observed d-values and respective prominent peaks correspond to the reflection from the (1 1 1), (2 2 0) and (3 1 1) planes, which coincide well with the JCPDS data [27]. The results of X-ray analysis well agree with earlier reported method [14,[22][23][24][28][29][30][31][32][33][34]. From this it can be concluded that the deposited CdSe films are poly-crystalline in nature with cubic modification.…”

“…It is used as thin film transistors, sensors, lasers, photoluminescence and optoelectronic devices in photoconductive and photovoltaic cells [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The nano-crystalline CdSe material is also used as photo-electrode in photo-electrochemical cell [15].…”

X-ray and optical properties of chemically deposited nanocrystalline CdSe thin films

“…As the limiting reactant is used up, growth will start slow down and eventually stop due to depletion of the reactant [24,25]. The behaviour of thickness versus deposition time is showed in Fig.…”

Characterization of cadmium selenide films for photovoltaic applications

“…Plot of (˛2) with respect to photon energy. selenide (1.75-1.8 eV [29,30]). The small increase of the band gap in comparison with bulk material could be related with small grain size and/or to stress due to deformation of the film [31].…”