Rajan Jose

Universiti Malaysia Pahang Al-Sultan Abdullah

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Chun‐Chen Yang

Ming Chi University of Technology

Izan Izwan Misnon

Universiti Malaysia Pahang Al-Sultan Abdullah

Seeram Ramakrishna

National University of Singapore

Mashitah M. Yusoff

University of Malaya

She‐Huang Wu

National Taiwan University of Science and Technology

JinKiong Ling

University of Konstanz

Yi‐Shiuan Wu

Ming Chi University of Technology

Qamar Wali

National University of Technology

Azhar Fakharuddin

University of Konstanz

Syam G. Krishnan

Queensland University of Technology

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Universiti Malaysia Pahang Al-Sultan Abdullah

149

National University of Singapore

Ming Chi University of Technology

University Hospital Lewisham

University of Malaya

University of Kerala

National University of Malaysia

Council of Scientific and Industrial Research

Universiti Teknologi MARA

Universiti Sains Malaysia

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High surface area activated carbon from rice husk as a high performance supercapacitor electrode

Electrochimica Acta (2016)

Ellie Yi Lih Teo Lingeswarran Muniandy Eng‐Poh Ng Farook Adam Abdul Rahman Mohamed

Specific surface area

Husk

10.1016/j.electacta.2016.01.140

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Citations (448)

White-light-emitting CdSe quantum dots synthesized at room temperature

Applied Physics Letters (2006)

Rajan Jose Zhivko Zhelev Rumiana Bakalova Yoshinobu Baba Mitsuru Ishikawa

White-light-emitting CdSe quantum dots (QDs) were synthesized at room temperature (RT, ∼23°C) using an organometallic colloidal growth process. These QDs are characterized by high and reproducible quantum yields (ΦPL∼0.4) as well as by unusual spectral broadening [full width at half maximum (FWHM) ∼150nm) despite of their observed size monodispersity. Surface functionalization of these quantum dots using mercaptosuccinic acid made them soluble in water. A change of color together with an enhancement in ΦPL was observed upon surface functionalization.

Surface Modification

10.1063/1.2219510

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Citations (51)

On The Scalability of Dye-Sensitized Solar Cells : Effect of Photoelectrode Area on the Photovoltaic and Charge Transport Parameters

Rajan Jose Azhar Fakharuddin Sathyaseelan Archana Panikar M. M. Yusoff

This study is aimed to provide new insights on the scalability of dye-sensitized solar cells (DSCs). The DSCs of electrode area up to ~2 cm2 were fabricated using commercially available P25 TiO2 particles, N3 dye, and iodide/triiodide electrolyte and evaluated using voltage - current and electrochemical impedance spectroscopic measurements. The photovoltaic conversion efficiency follows a biexponential decay, the main contributor to which is the short circuit current density(JSC). Interesting features were observed in the electrochemical impedance spectra and charge transport parameters in the devices as the photoelectrode areas are increased. Results show that electrons from an area above a threshold are not collected due to varied choice of diffusion pathways. Furthermore, this study identify that area of the photoelectrode for reporting the efficiency needs to be fixed at ~0.5 cm2 for 25 nm TiO2 particles because below which it strongly vary. On the other hand, the study provides opportunities to build high efficiency dye-sensitized solar cells using the current choice of materials.

Triiodide

Open-circuit voltage

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Introduction to quantum dots

Elsevier eBooks (2022)

Rajan Jose Y. Al‐Douri

Bohr radius

Nanomaterials

Bohr model

10.1016/b978-0-323-85457-3.00034-7

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Citations (1)

全固体リチウムイオン電池のLLTO/LFP-C断面積に沿った温度依存伝導率と線プロファイルに関する相関研究【JST・京大機械翻訳】

Solid State Ionics (2019)

K P Abhilash Selvin P. Christopher B Nalini Rajan Jose Hui Xia

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Large scale synthesis of binary composite nanowires in the Mn 2 O 3 -SnO 2 system with improved charge storage capabilities

Chemical Engineering Journal (2017)

Bincy Lathakumary Vijayan Syam G. Krishnan Nurul Khairiyyah Mohd Zain Midhun Harilal Asfand Yar

Electrospinning

10.1016/j.cej.2017.06.171

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Citations (49)

Metal Oxide Composite Cathode Material for High Energy Density Batteries

Springer eBooks (2021)

JinKiong Ling Rajan Jose

10.1007/978-3-030-68462-4_20

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Structure−Property Correlation of CdSe Clusters Using Experimental Results and First-Principles DFT Calculations

Journal of the American Chemical Society (2005)

Rajan Jose Nurbosyn U. Zhanpeisov Hiroshi Fukumura Yoshinobu Baba Mitsuru Ishikawa

Structures and properties of CdSe quantum dots (clusters) up to a diameter of ∼2 nm were investigated by combining experimental absorption, photoluminescence (PL), and X-ray diffraction (XRD) spectroscopies as well as ab initio DFT calculations. These CdSe clusters were nucleated and grown from solutions containing respective cadmium and selenium precursors following the hot-injection technique that allows one to obtain size-controlled CdSe clusters having PL efficiency up to 0.5. The DFT calculations were performed at the B3LYP/Lanl2dz level and followed by time-dependent TDDFT calculations to estimate n energy singlet transitions. On the basis of the results of these experimental and theoretical studies, an approach to determine whether the proposed cluster with a mean diameter of ∼2 nm is more physically reasonable is discussed. It was shown that the minimum nucleus of a CdSe cluster consists of (CdSe)3 with a six-membered ring and planar structure. No PL is observed for this structure. The formation of the next stable cluster depends on whether hexadecylamine (HDA) was used for the growth of the CdSe clusters. In the absence of HDA, the second cluster was found to be (CdSe)6 characterized by a broad PL spectrum, while in the presence of HDA, it was found to be (CdSe)n (where n ≥ 14) with a sharp PL spectrum.

10.1021/ja0565018

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Citations (168)

LED Automotive Lighting Application Technology

Luruthudass Annaniah Mohamed Salleh M. Saheed Rajan Jose

Automotive lighting has provoked human ingenuity to a next level, where many amazing ideas, concepts, technologies, designs, and science have been discovered. LED can be designed in many possible designs to fit the automotive lighting application. Before readers deep dive into the automotive lighting system, they must understand the basics of photometrics. Photometry is the science concerned with measuring human visual response to light. The automotive lighting system can be divided into two subfamilies that is lighting (to see) and signaling (to be seen). This chapter focuses on the lighting "to see," that is, the headlamps. It covers the headlamp functions and some of the developments related to headlamps like adaptive front-lighting systems, future headlamp technology, and LED headlamp thermal management. Automotive interior lighting has captivated many car buyers. It is one of the key attractions for car buyers.

Headlamp

LED lamp

Smart lighting

10.1002/9783527831678.ch4

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Lifecycle Analysis and Circular Economy of LEDs

Luruthudass Annaniah Mohamed Salleh M. Saheed Rajan Jose

This chapter deals with the lifecycle analysis of light-emitting diode (LEDs) and has been divided into life cycle analysis (LCA) of LEDs and Circular Economy of LEDs. The LCA results are used to analyze: carbon footprint of materials in sourcing, transporting, and processing; the materials used for fabricating a device; energy spent; and waste generated in a technology and could be used to optimize the process for ideal usage times in terms of energy and material efficiency. Two significant quantities involved in LCA are the materials footprint and embodied energy. The chapter addresses the end-of-use management of LEDs considering ten characteristics of materials' circular economy. These 10 strategies include: lower materials by design; multifunctional materials; materials of higher circularity; high durability materials; low carbon and embodied energy materials; reduced material miles; sustainable materials; materials of higher environmental benignity; no toxicity; and materials enabling natural habitat.

Circular Economy

Embodied Energy

Carbon Footprint

Footprint

10.1002/9783527831678.ch9

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