Using Spray Pyrolysis Technique to Prepare PBS Lead Sulfide Thin Films and Study Their Structural and Electrical Properties as Function of Thickness
Rana Kadhim Abdulnabi
Rana Kadhim Abdulnabi, MSC, Department of Applied Physics, Iraq, Baghdad, 101, Iraq.
Manuscript received on August 05, 2016. | Revised Manuscript received on August 06, 2016. | Manuscript published on September 05, 2016. | PP: 60-63 | Volume-6 Issue-4, September 2016. | Retrieval Number: D2897096416/2016©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Lead sulfide (PbS) thin films are prepared by “solution “from, lead acetate” pb (CH3COO)2 and Thiourea CS(NH2) using Spray Pyrolysis Technique (SPT) on glassy substrates at temperature of 200Cº with a variable thicknesses of 100, 200, 300 nm. The “structural properties are approved by XRay Refraction (XRR), which helped in displaying the films having a cubic structure such as NaCl The size of the crystal grains of PbS films are shown to be increased when increasing the thickness of PbS films. Roughness of the films was measured according to the Root Mean Square (RMS). This was achieved using Scanning Microscope (SM). With increasing film thickness to the mentioned values, results showed an increase with RMS, electrical conductivity of the PbS film to 0.0186*10- ³, 0.4166*10-3 and 0.9090*10- ³ (Ω.cm)- ¹ and with charge-carrier concentration as well to 0.298*10¹¹, 1.1*1011 , 12*10¹¹ cm− 3 الخالصة:. في هذا البحث تم تحضير اغشية كبريتيد الرصاص) PbS ) بأستخدام محلول من NH2(CS على قاعدة زجاجية ) والثايوريا PbS ) CH3COO(2 خالت الرصاص بدرجة حرارة بطريقة الرش الكيميائي الحراري . تم دراسة الخصائص التركيبية عند اسماك متغيرة (300,200,100 (بأستخدام اشعة Ray- X التي اوضحت الشكل البلوري لالغشية وقد الحظنا زيادة الحجم الحبيبي لالغشية بزيادة سمك الغشاء , كما تم قياس خشونة السطح لالغشية بأستخدام فحص STM. كما تم دراسة الخصائص الكهربائية ومنها التوصيلية الكهربائية والتي قيمها والتي لالغشية الشحن وحامالت . ( 186, .4166, .9 9 )*1 ˉ³( Ω.cm)ˉ¹ ( . 98,1.1,1 )*1 ¹¹ cmˉ³ قيمها
Keywords: lead sulfide, chemical pyrolysis, thin film, semiconductor