Malaysian Journal of Analytical Sciences Vol 21 No 5 (2017): 1134 - 1142

DOI: https://doi.org/10.17576/mjas-2017-2105-16

 

 

 

INFRA-RED INVESTIGATION ON SILICON SOLAR CELLS

 

(Kajian Inframerah ke atas Sel-sel Suria Silikon)

 

Nurfarizza Surhada Mohd Nasir, Suhaila Sepeai*, Cheow Siu Leong, Kamaruzzaman Sopian, Saleem H.Zaidi

 

Solar Energy Research Institute (SERI)

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

 

*Corresponding author:  suhailas@ukm.edu.my

 

 

Received: 12 April 2017; Accepted: 1 September 2017

 

 

Abstract

Increasing reliance on carbon-based fossil fuel is likely to cause irreversible damage to global environment. Crystalline silicon (Si) based on pollution free photovoltaic (PV) electricity generation technology is expected to play a dominant role in this electricity generation transition from carbon to silicon. Since Si wafer represents almost 50% of the PV conversion cost, thinner wafers are highly effective at reducing the production cost. Therefore, there is an urgent need to develop alternative device configurations and processing methods for thinner Si wafer. Si wafer has to go through cleaning process, thinning process, textured process and partially transparent technique. In this work optical transmission through Si is investigated as a function of wafer thickness. For this improved performance, surface morphology, optical properties and the optical transmission near band gap is measured with custom-designed rear infra-red (IR) transmission measurement system. Si wafer with the textured surface have more light absorption than the as-cut and planar Si wafer.

 

Keywords:  optical transmission, thin silicon wafers, infrared light, light absorption

 

Abstrak

Peningkatan kebergantungan terhadap penggunaan bahan bakar berasaskan sumber karbon mengakibatkan pencemaran alam sekitar. Fotovolta (PV) sifar pencemaran berasaskan silikon kristal merupakan teknologi tenaga elektrik generasi terkini dijangkakan menjadi sumber yang mendominasi perubahan sumber bahan api berasaskan karbon kepada silikon. Tambahan pula, kepingan silikon meliputi 50% kos keseluruhan pembuatan PV, pengurangan kos yang efektif didapati melalui penipisan kepingan.. Oleh itu, kaedah alternatif kepada pembaharuan bagi konfigurasi sistem penipisan silikon harus di cadangan. Kepingan silikon harus melalui proses pembersihan, proses penipisan, proses tekstur dan teknik separa telus. Dalam kajian hubungan di antara ketebalan kepingan silicon dan maklumat optik diteliti. Bagi meningkatkan prestasi, morfologi permukaan, sifat optik, dan penghantaran optik menghampiri jurang jalur diukur dengan menggunakan sistem pengukuran penghantaran gelombang IR.

 

Kata kunci:  penghantaran optik, kepingan silikon nipis, cahaya inframerah, penyerapan cahaya

 

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