PUTERI NOR AZNIE FAHSYAR BINTI SYED MAHADZIR
@taylors university
Lecturer, School of Engineering
Clean Technology Impact Lab
RESEARCH, TEACHING, or OTHER INTERESTS
Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment, Surfaces, Coatings and Films
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Adamu Ahmed Goje, Norasikin Ahmad Ludin, Puteri Nor Aznie Fahsyar, Ubaidah Syafiq, Puvaneswaran Chelvanathan, Abu Dzar Al-Ghiffari Syakirin, Mohd Asri Teridi, Mohd Adib Ibrahim, Mohd Sukor Su’ait, Suhaila Sepeai,et al.
Springer Science and Business Media LLC
AbstractPerovskite solar cells (PSCs) have shown a significant increase in power conversion efficiency (PCE) under laboratory circumstances from 2006 to the present, rising from 3.8% to an astonishing 25%. This scientific breakthrough corresponds to the changing energy situation and rising industrial potential. The flexible perovskite solar cell (FPSC), which capitalizes on the benefits of perovskite thin-film deposition and operates at low temperatures, is key to this transition. The FPSC is strategically important for large-scale deployment and mass manufacturing, especially when combined with the benefits of perovskite thin-film deposition under moderate thermodynamic conditions. Its versatility is demonstrated by the ease with which it may be folded, rolled, or coiled over flexible substrates, allowing for efficient transportation. Notably, FPSCs outperform traditional solar panels in terms of adaptability. FPSCs have several advantages over rigid substrates, including mobility, lightweight properties that help transportation, scalability via roll-to-roll (R2R) deposition, and incorporation into textiles and architecture. This in-depth examination dives into their fundamental design and various fabrication techniques, which include conducting substrates, absorber layers, coordinated charge movement, and conductive electrodes. This review evaluates critical FPSC fabrication techniques such as thermal evaporation, R2R approaches, slot die and spray deposition, blade coating, and spin coating. The present challenges in constructing FPSCs with high performance and long-term stability are also highlighted. Finally, the solar industry's potential uses for both indoor and outdoor FPSCs have been discussed.
Puteri Nor Aznie Fahsyar, Norasikin Ahmad Ludin, Noor Fadhilah Ramli, Puteri Intan Zulaikha, Suhaila Sepeai, and Ahmad Shah Hizam Md Yasir
Springer Science and Business Media LLC
AbstractThe obstacle to the industrialization of perovskite solar cells (PSC) technology lies in their stability. This work rationalizes the PSC design with the employment of 2D-MoS2 as the hybrid hole transport layer (HTL). MoS2 was selected due to its unique optoelectronic and mechanical properties that could enhance hole extraction and thus boost the performance and stability of PSC devices. Five concentrations indicated MoS2 nanosheets were directly deposited onto the perovskite layer via the facile spin coating method. The electrochemical exfoliation and liquid exchange methods were demonstrated to obtain the lateral size of MoS2 nanosheets and further discussed their microscopic and spectroscopic characterizations. Remarkably, the optimum thickness and the excellent device increased the stability of the PSC, allowing it to maintain 45% of its degradation percentage ($$\\frac{\\Delta PCE}{PCE}$$ Δ P C E PCE ) for 120 h with high relative humidity (RH = 40–50%) in its vicinity. We observed that lithium-ion can intercalate into the layered MoS2 structure and reduce the interfacial resistance of perovskite and the HTL. Most importantly, the 2D-MoS2 mechanism’s effect on enabling stable and efficient devices by reducing lithium-ion migration in the HTL is demonstrated in this work to validate the great potential of this hybrid structure in PSC applications.
Mwaphira Pitilizani, Puteri Nor Aznie Fahsyar, Venkatesh Krishna Raja, Ahmad Adel Alsakati, and Abhishek Gudipalli
IEEE
The increasing demand for electricity, driven by economic growth and population expansion, necessitates the enhancement of electrical systems, particularly in the design of substations and other power system components. In a modern power system comprising power generation plants, transmission networks, diverse loads, and advanced substations equipped with automation and communication technologies, substations play a pivotal role alongside generators and transmission lines. This work undertakes a comparative analysis of 132 kV substations, focusing on their design and control interlocking logic. The design disparities are examined by assessing Gas Insulated Substations (GIS) and Air Insulated Substations (AIS) characteristics, while control interlocking logic differences are explored concerning the conditions for operating Circuit Breakers (CB), isolators, and earth switches. Moreover, network analysis is conducted encompassing load flow analysis and fault analysis.
Teng Koong Chung, Puteri Nor Aznie Fahsyar, and V. Indragandhi
IEEE
Underground cable has been used to transmit power over the overhead lines due to several advantages, such as a lower likelihood of developing faults and better aesthetics. Because it is buried underground, it saves a lot of space as well as lowers the risk of human injury. One of the main disadvantages of underground cable is the ability to determine a fault location since it cannot be seen with the naked eye. The cable thumping method is recognized as one of the highly accurate methods to determine the fault location. However frequent thumping may result in weakening the insulation cable. In this paper, a system with the Varley Loop and Murray Loop methods is proposed to detect the fault location of the underground cable. The purpose of this algorithm is to find the fault accurately while not damaging the underground cable. Varley Loop is more suited for longer cables with higher resistance while Murray Loop is more suited for shorter cables with lower resistance. A physical prototype will be developed that has a remote monitoring capability through an LCD display.
Lakshmi Prasad Shana, Abhishek Gudipalli, Puteri Nor Aznie Fahsyar, and Chockalingam Aravind Vaithilingam
IEEE
In this modern world, electric vehicles are very popularly growing day-to-day. In these electric vehicles, the parameter estimation and sizing of the appropriate motor and braking system controller design need a lot of implementations. Brushless-DC (BLDC) motors are very popular in improving efficiency at high and low costs. Further, it utilizes state-of-the-art super-capacitor technology to enhance the efficiency of electric vehicles. A powertrain is a crucial element that consists of a battery inverter, braking controller, and charging port. Also useful for further researching components of powertrain and various parts of electric vehicles. This research delves into a comparative analysis of various motor efficiency and power-to-weight ratios. An optimized regenerative braking control system harnesses the energy storage system with the functioning of a generator. The performance of the model was tested in a Matlab/Simulink environment. This research aims to enhance the regulation of energy power flow in electric vehicles, ultimately, regenerative efficiency maximized.
Puteri Nor Aznie Fahsyar, Norasikin Ahmad Ludin, Noor Fadhilah Ramli, Mohamad Firdaus Mohamad Noh, Rozan Mohamad Yunus, Suhaila Sepeai, Mohd Adib Ibrahim, Mohd Asri Teridi, and Kamaruzzaman Sopian
Springer Science and Business Media LLC
AbstractThe establishment of perovskite solar cells (PSCs) in terms of their power-conversion efficiency (PCE) over silicon-based solar cells is undeniable. The state-of-art of easy device fabrications of PSCs has enabled them to rapidly gain a place in third-generation photovoltaic technology. Numerous obstacles remain to be addressed in device efficiency and stability. Low performance owing to easily degraded surface and deterioration of perovskite film quality resulting from humidity are issues that often arise. This work explored a new approach to producing high-quality perovskite films prepared under high relative humidity (RH = 40%–50%). In particular, the ubiquitous 4-tert-butylpyridine (tBp) was introduced into lead iodide (PbI2) precursor as an additive, and the films were fabricated using a two-step deposition method followed by a delay-deposition technique of methylammonium iodide (MAI). High crystallinity and controlled nucleation of MAI were needed, and this approach revealed the significance of time control to ensure high-quality films with large grain size, high crystallography, wide coverage on substrate, and precise and evenly coupled MAI molecules to PbI2 films. Compared with the two-step method without time delay, a noticeable improvement in PCE from 3.2 to 8.3% was achieved for the sample prepared with 15 s time delay. This finding was primarily due to the significant enhancement in the open-circuit voltage, short-circuit current, and fill factor of the device. This strategy can effectively improve the morphology and crystallinity of perovskite films, as well as reduce the recombination of photogenerated carriers and increase of current density of devices, thereby achieving improved photovoltaic performance.
Puteri Nor Aznie Fahsyar, Norasikin Ahmad Ludin, Noor Fadhilah Ramli, Suhaila Sepeai, Mohd Sukor Suait, Mohd Adib Ibrahim, Mohd Asri Teridi, and Kamaruzzaman Sopian
Springer Science and Business Media LLC
Mohamad Firdaus Mohamad Noh, Nurul Affiqah Arzaee, Inzamam Nawas Nawas Mumthas, Puteri Nor Aznie Fahsyar, Noor Fadhilah Ramli, Nurul Aida Mohamed, Siti Nur Farhana Mohd Nasir, Abd Rashid Mohd Yusoff, Mohd Adib Ibrahim, and Mohd Asri Mat Teridi
Elsevier BV
N.F. Ramli, P.N.A. Fahsyar, N.A. Ludin, M.A.M. Teridi, M.A. Ibrahim, and Suhaila Sepeai
Elsevier BV
Ainon Shakila Shamsuddin, Puteri Nor Aznie Fahsyar, Norashikin Ahmad Ludin, Ibrahim Burhan, and Salina Mohamad
Institute of Advanced Engineering and Science
Organo-halide Perovskite Solar Cells (PSC) have been reported to achieve remarkably high power conversion efficiency (PCE). A thorough understanding of the role of each component in solar cells and their effect as a whole is still required for further improvement in PCE. In this paper, the effect of Molybdenum Disulfide (MoS2) in PSC with mesoporous structure configuration was analyzed using Solar Cell Capacitance Simulator (SCAPS). With the MoS2 layer which having two-fold function, acting as a protective layer, by preventing the formation of shunt contacts between perovskite and Au electrode, and as a hole transport material (HTM) from the perovskite to the Spiro-OMETAD. As simulated, PSC demonstrates a PCE, ŋ of 13.1%, along with stability compared to typical structure of PSC without MoS2 (Δ ŋ/ŋ=-9% vs. Δ ŋ/ŋ=-6%). The results pave the way towards the implementation of MoS2 as a material able to boost shelf life which very useful for new material choice and optimization of HTMs.
N.F. Ramli, P.N.A. Fahsyar, N.A. Ludin, M.A.M. Teridi, M.A. Ibrahim, Saleem H Zaidi, and Suhaila Sepeai
Elsevier BV
PuteriNor Aznie Fahsyar and Norhayati Soin
Medknow
Abstract This paper outlines the Taguchi optimization methodology, which is applied to optimize the significant parameters in designing the radiofrequency identification (RFID) tag rectifier. The design parameters evaluated are size of transistor (W/L), number of stage (N), and capacitor (C) which realized could gain the circuit performance. An Orthogonal array, signal to noise ratio (S/R), and Pareto analysis of variance are employed to analyze the effect of this design parameter. Through statistical analysis, the optimal variable combination for high-output voltage and low power is 8 μm for W/L, 150 pF for capacitor, and four number of stage. Using the Taguchi method for design of experiment, other significant effects such as the interaction among the design parameters are also investigated. The study shows that the Taguchi is very suitable to solve the stated problem with a minimum number of trials and can be applied in RFID tag design. Other RFID researchers are recommend to consider about this method to be one of design methodology in their work as well.
P.N.A. Fahsyar and N. Soin
IEEE
This paper presents an envelope detector circuit design for RFID applications implemented in 0.18µm CMOS technology. Towards the design compatibility with standard digital CMOS process, the doubler cell, diode connected PMOS and low transconductance transistor are chosen to place in the rectifier section and to replace the conventional diode as well as the resistor. The proposed envelope detector circuit was simulated with a 150mV – 250mV input signal. With 0.2 modulation index at 900MHz carrier frequency, the power dissipation is found to be 18.8µW at 27°C.
P.N.A. Fahsyar and N. Soin
IEEE
The design of a low power voltage multiplier for passive UHF RFID transponder which compatible with CMOS process and can be applied to the surroundings in where the distance from the reader changes greatly is presented in this paper. The functioning principle of N-stage voltage multiplier is introduced in this paper. With the intention of maximizing the operating range of RFID tag, low power design techniques are necessary. Therefore, the key design parameters optimization is discussed. The transistor size (W/L) and number of stages (N) are varied in order to attain the great value of output voltage and power efficiency. This proposed design is implemented in 0.18µm process. The calculated and simulated result shows that the four-stage voltage multiplier can work at frequency 900MHz by using 8µm transistor size and the power efficiency is 34% with output voltage 1.2V.
Puteri Nor Aznie Fahsyar SM and Norhayati Soin
IEEE
This paper presents the comparison study of the performance of two envelope detector circuits, implemented on Standard Cells 0.18µ CMOS process. The envelope detector which represents one part of demodulator block for RFID applications was designed based on two methods. The first circuit is designed partly using doubler cells with the aim to minimize the power consumption. The second circuit is built using conventional NMOS and low threshold transistor. The performance of both envelope detector circuits have been investigated. The first circuit is expected to consume lower input power compared to the second circuit which less than 1µW [1]. A few constraints also discussed in designing both circuits.
RECENT SCHOLAR PUBLICATIONS
MOST CITED SCHOLAR PUBLICATIONS
Publications
2021. Ambient fabrication of perovskite solar cells through delaydeposition technique. Materials for Renewable and Sustainable Energy 10(2): 11
2021. Correlation of simulation and experiment for perovskite solar cells with MoS2 hybrid-HTL structure. Applied Physics A 127(5):383.
2021. Graphene dispersion as a passivation layer for the enhancement of perovskite solar cell stability, Mater. Chem. 123798. .
2021. Motion-dispensing as an effective strategy for preparing efficient high-humidity processed perovskite solar cells, J. Alloys Compd. 854.
2019. Compatibility Between Compact and Mesoporous TiO2 layers on the Optimization of Photocurrent Density in Photoelectrochemical Cells. Surfaces and Interfaces.
2019. Device Simulation of Perovskite Solar Cells with Molybdenum Disulfide as Active Buffer Layer,” Bull. Electr. Eng. Informatics.
2013. Optimization of Design Parameter for RFID Tag Rectifier using Taguchi Method”, IETE Journal, Vol 20, No.2 pp157-161.