Malaysian Journal of Analytical Sciences Vol 19 No 4 (2015): 760 - 765

 

 

 

OPTICAL BEHAVIOR OF NH₄I DOPED CELLULOSE ACETATE MEMBRANE FOR DYE SENSITIZED SOLAR CELL

 

(Pelakuan Optikal Selulosa Asetat Membran yang Didopkan NH₄I untuk

Pewarna Sensitif Solar Sel)

 

Noor Syafiqah Samsi¹, Rosnah Zakaria¹, Oskar Hasdinor Hassan², Muhd Zu Azhan Yahya³,

Ab Malik Marwan Ali^1,2*

 

¹Faculty of Applied Sciences,

² iMADE, Institute of Science,

Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

³Universiti Pertahanan Nasional Malaysia, Kem Sungai Besi, 57000 Kuala Lumpur, Malaysia

 

*Corresponding author: ammali@salam.uitm.edu.my

 

 

Received: 23 November 2014; Accepted: 27 June 2015

 

 

Abstract

The effect of ammonium iodide (NH₄I) on cellulose acetate (CA) membrane based on solid polymer electrolyte was investigated. FTIR analysis showed that the complaxation was taken placed between polymer and salt to form CA-NH₄I complexes. Alternating current impedance measurement was carried out in the frequency range between 50 Hz and 1MHz at room at elevated temperature with an applied voltage of 1V. The ionic conductivity increased up to 10^-04 Scm^-1 with increasing NH₄I contents for the CA-NH₄I at room temperature. As NH₄⁺ ion concentration increase, the optical band gaps decreased. This suggests that NH₄I, as a dopant, is a good choice to improve the electrical properties of cellulose acetate polymer electrolytes.

 

Keywords: polymer electrolyte, Dye Sensitized Solar Cell, UV-Vis Spectroscopy

 

Abstrak

Kesan ammonium iodida (NH₄I) pada selulosa asetat (CA) membran berdasarkan elektrolit polimer pepejal telah disiasat. Analisis FTIR menunjukkan complaxation itu diambil diletakkan di antara polimer dan garam untuk membentuk kompleks CA-NH4I. Seli pengukuran galangan semasa telah dijalankan dalam julat frekuensi di antara 50 Hz dan 1MHz di bilik pada suhu tinggi dengan voltan kenaan 1V. Kekonduksian ionik meningkat sehingga 10^-04 SCM^-1 dengan meningkatkan kandungan NH₄I untuk CA-NH₄I pada suhu bilik. Sebagai NH₄ ⁺ kepekatan ion peningkatan, jurang jalur optik menurun. Ini menunjukkan bahawa NH4I, sebagai pendopan yang, adalah pilihan yang baik untuk meningkatkan ciri-ciri elektrik elektrolit polimer selulosa asetat.

 

Kata kunci: polimer elektrolit, Dye sensitif Sel Solar, UV-Vis Spektroskopi

 

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