Pemfungsian silikon dengan molekul pewarna sebagai bahan penuaian cahaya

Translated title of the contribution: Si functionalization with dye molecular as lightharvesting material

Research output: Contribution to journalArticle

Abstract

The surface plays an important role in thin silicon solar cells, especially with regard to the surface state and interface electronic properties that influence the electron and hole to recombine. In order to keep the recombination loss at a tolerable minimum and avoid an unacceptably large efficiency loss when moving towards thinner silicon materials, the surface must be electronically wellpassivated. Passivation is the most significant step for the functionalization of silicon. In this study, Si functionalization with a dye molecule might increase the absorption of light that acts as light-harvesting material on the silicon surface. Two types of dye molecular were used; DiL (λpeak = 549 nm) and DiO (λpeak = 484 nm). Both dyes were deposited using a spin-coating technique. These dye layers on the silicon surface were characterized using a Kelvin probe (KP) and photoluminescence (PL) spectroscopy. A different mechanism of slow charge trapping and detrapping was observed using KP measurement. A lifetime decay was observed that indicated a slow process of charge detrapping, owing to light trapping inside the dye/SiNW interface, with a slow process for an equilibrium to establish between the surface states and the space charge region. An average lifetime of the entire fluorescence decay process was recorded at about 1.24 ns (DiO) and 0.22 ns (DiL), using PL spectroscopy. We show conclusively that these two types of dye can be used as light absorbers, in order to improve the surface properties of the silicon.

Original languageMalay
Pages (from-to)1256-1263
Number of pages8
JournalMalaysian Journal of Analytical Sciences
Volume19
Issue number6
Publication statusPublished - 2015

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Silicon
Coloring Agents
Photoluminescence spectroscopy
Surface states
Charge trapping
Coating techniques
Silicon solar cells
Spin coating
Electric space charge
Passivation
Electronic properties
Surface properties
Fluorescence
Molecules
Electrons

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

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title = "Pemfungsian silikon dengan molekul pewarna sebagai bahan penuaian cahaya",
abstract = "The surface plays an important role in thin silicon solar cells, especially with regard to the surface state and interface electronic properties that influence the electron and hole to recombine. In order to keep the recombination loss at a tolerable minimum and avoid an unacceptably large efficiency loss when moving towards thinner silicon materials, the surface must be electronically wellpassivated. Passivation is the most significant step for the functionalization of silicon. In this study, Si functionalization with a dye molecule might increase the absorption of light that acts as light-harvesting material on the silicon surface. Two types of dye molecular were used; DiL (λpeak = 549 nm) and DiO (λpeak = 484 nm). Both dyes were deposited using a spin-coating technique. These dye layers on the silicon surface were characterized using a Kelvin probe (KP) and photoluminescence (PL) spectroscopy. A different mechanism of slow charge trapping and detrapping was observed using KP measurement. A lifetime decay was observed that indicated a slow process of charge detrapping, owing to light trapping inside the dye/SiNW interface, with a slow process for an equilibrium to establish between the surface states and the space charge region. An average lifetime of the entire fluorescence decay process was recorded at about 1.24 ns (DiO) and 0.22 ns (DiL), using PL spectroscopy. We show conclusively that these two types of dye can be used as light absorbers, in order to improve the surface properties of the silicon.",
keywords = "Dye molecular, Kelvin probe, Lifetime, Light harvesting, Si functionalization",
author = "{Mohd Sinin}, {Nurul Aqidah} and Ibrahim, {Mohd. Adib} and {Mat Teridi}, {Mohd Asri} and {Ahmad Ludin}, Norasikin and Suhaila Sepeai and Kamaruzzaman Sopian",
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T1 - Pemfungsian silikon dengan molekul pewarna sebagai bahan penuaian cahaya

AU - Mohd Sinin, Nurul Aqidah

AU - Ibrahim, Mohd. Adib

AU - Mat Teridi, Mohd Asri

AU - Ahmad Ludin, Norasikin

AU - Sepeai, Suhaila

AU - Sopian, Kamaruzzaman

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AB - The surface plays an important role in thin silicon solar cells, especially with regard to the surface state and interface electronic properties that influence the electron and hole to recombine. In order to keep the recombination loss at a tolerable minimum and avoid an unacceptably large efficiency loss when moving towards thinner silicon materials, the surface must be electronically wellpassivated. Passivation is the most significant step for the functionalization of silicon. In this study, Si functionalization with a dye molecule might increase the absorption of light that acts as light-harvesting material on the silicon surface. Two types of dye molecular were used; DiL (λpeak = 549 nm) and DiO (λpeak = 484 nm). Both dyes were deposited using a spin-coating technique. These dye layers on the silicon surface were characterized using a Kelvin probe (KP) and photoluminescence (PL) spectroscopy. A different mechanism of slow charge trapping and detrapping was observed using KP measurement. A lifetime decay was observed that indicated a slow process of charge detrapping, owing to light trapping inside the dye/SiNW interface, with a slow process for an equilibrium to establish between the surface states and the space charge region. An average lifetime of the entire fluorescence decay process was recorded at about 1.24 ns (DiO) and 0.22 ns (DiL), using PL spectroscopy. We show conclusively that these two types of dye can be used as light absorbers, in order to improve the surface properties of the silicon.

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