Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 4 (2017) 12657–12660 www.materialstoday.com/proceedings ICSEP 2016 Tailoring the surface morphology with annealing temperature of the lead free perovskite solar cell, CH 3 NH 3 SnCl 3 and its relation to the cell performance. Sk Abdul Moyez, Subhasis Roy,* Department of Chemical Engineering, University of Calcutta, 92 A. P. C. Road, Kolkata, Kolkata-700009, India Abstract Thin film organic-inorganic hybrid perovskite solar cells (CH 3 NH 3 PbX 3 , X= I/Cl/Br) has convulsed emerging photovoltaic technologies due to its unique and extensive feature such as high efficiency, low manufacturing cost, ease to fabricate, although the presence of lead (Pb) is a serious and hazardous drawback associated with it. In this experiment, hazards Pb has been replaced by tin (Sn) to fabricate eco-friendly perovskite solar cell (CH 3 NH 3 SnCl 3 ) and details study of fabricated thin film has been performed at different thermal condition to optimize the photovoltaic performance . © 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of 2nd International Conference on Solar Energy Photovoltaic. Keywords:Thin films ,Perovskite solar cell, Annealing, Structural properties, Photovoltaic efficiencies 1. Introduction The promising growth of recently developing organic−inorganic halide hybrid perovskite solar cells, CH 3 NH 3 PbX 3 (X= I/Cl/Br), has addressed extensive attention due to its high power conversion efficiencies (PCE), from 3.8% in its first appearance in 2009 to a 20.1% in recent time [1], due to its easy and scalable processing methods [2]. The elongated carrier diffusion length, high absorption coefficient, direct band gap, and high carrier mobility make this material fitted for solar energy harvester [3, 4] but the presence of hazardous lead (Pb) would ultimately delay the commercialization. Lead poisoning is baneful and deadly for humans and other active species [5]. It would be exciting to experiment the Pb substitution of CH 3 NH 3 PbX 3 by tin (Sn) as non-toxic materials which share the same group in the periodic table with Pb. Recently developed CH 3 NH 3 SnI 3 solar cell achieved a power conversion * Corresponding author. Tel.: +91-9775032952 (mobile), +9133-2350-8386/6396 (ext. 256) (office) E-mail address:subhasis1093@gmail.com,srchemengg@caluniv.ac.in 2214-7853© 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of 2nd International Conference on Solar Energy Photovoltaic.