Processing Temperature Effect on Optical and Morphological Parameters of Organic Perovskite CH3NH3PbI3 Prepared Using Spray Pyrolysis Method
| Authors | I. Kemerchou1, 2 , F. Rogti1, B. Benhaoua2, N. Lakhdar3, A. Hima3, O. Benhaoua2, A. Khechekhouche2 |
| Affiliations |
1Laboratory of Analysis and Control of Energy Systems and Networks, Faculty of Technology University Amar Telidji Laghouat, BP 37G, Ghardaïa Road, 03000 Laghouat, Algeria 2University of El Oued, UDERZA Unit, Fac. Technology, 39000 El Oued, Algeria 3University of El Oued, Fac. Technology, 39000 El Oued, Algeria |
| Е-mail | nacereddine_l@hotmail.fr |
| Issue | Volume 11, Year 2019, Number 3 |
| Dates | Received 28 December 2018; revised manuscript received 20 June 2019; published online 25 June 2019 |
| Citation | I. Kemerchou, F. Rogti, B. Benhaoua, et al., J. Nano- Electron. Phys. 11 No 3, 03011 (2019) |
| DOI | https://doi.org/10.21272/jnep.11(3).03011 |
| PACS Number(s) | 42.70.Jk, 81.15.Rs |
| Keywords | CH3NH3PbI3, Spray pyrolysis (9) , Band gap (29) , Auerbach energy, Processing temperature. |
| Annotation |
Renewable energy is actually in exponential evolution to find out a natural, low price, secured and safe alternative for fuel energy resources. Recently, different layer deposition methods of perovskite materials are investigated in photovoltaic applications in order to understand the effect of ambient parameters on solar cell characteristics such as short circuit current density (Jsc), open circuit voltage (Voc), fill factor (FF) and power conversion efficiency (PCE). In this paper, the spray pyrolysis deposition method with a moving nozzle has been used to fabricate the organic-inorganic perovskite material layer: methylammonium lead triiodide CH3NH3PbI3 (MAPbI3). In this context, three samples of organic perovskite CH3NH3PbI3 material have been deposited under various processing temperatures; 70 °C, 80 °C and 100 °C at ambient conditions in order to deduce the effect of temperature on different optical and morphological parameters, namely, layer form, band gap and Auerbach energy. Therefore, each sample's band gap was calculated using optical transmittance spectrum (UV-visible spectrophotometer Shimadzu, Model 1800) and each optical characteristic was made through scanning electron microscope (SEM:FEI Quanta 250 with a tungsten filament). It is found that Auerbach energy decreases with increasing processing temperature giving the lower value of 0.66 eV at 100 °C, which also corresponds to the better band gap value of 1.49 eV. In addition, it is to note that from SEM analysis, the layer morphology of perovskite CH3NH3PbI3 is better with high processing temperature value in comparison with lower ones. The obtained results are encouraging for use the 100 °C processed perovskite CH3NH3PbI3 for new generation high efficiency solar cell applications. |
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