Development Of Spacer Free Self-Aligned Contact Implantation For Power Devices

Mengoptimasi skema proses integrasi bagi sesebuah teknolgi merupakan salah satu faktor penting untuk mengurangkan bilangan kecatatan dan kitaran masa dalam bidang fabrikasi wafer. Dalam pengajian sarjana ini, aliran proses yang dioptimasi bagi menjajarkan penimpalan kontak telah dikaji bagi teknologi Infineoen CoolMOS. Selepas mengaji 3 idea yang berlainan dengan insentif, konsep yang paling berpotensi tinggi dipilih bagi pengoptimasian dan pencirian lanjutan di peringkat wafer dan poduk. Optimization of the process integration scheme for a technology is one of the key factors within wafer fabrication in order to reduce defect density and production cycle time. Within this master study, an optimized process flow for the self-aligned contact implantation was evaluated for the Infineons CoolMOS technology. After intensive feasibility investigations of 3 different ideas, the most promising concept was further optimized and characterized on wafer level as well as in the final product

Development Of SiO2 On 4H-SiC By Direct Thermal Oxidation And Post Oxidation Annealing In HNO3 & H2O Vapour

The need to thermally grow a thick SiO2 film (>50 nm) with high breakdown voltage (> 5 MV/cm at 1 uA/cm2) is crucial for high power devices (> 600 V) applications. Keperluan menghasilkan filem tebal SiO2(> 50 nm) dengan keupayaan pecahan voltan yang lebih tinggi (> 5 MV/cm pada 1 uA/cm2) melalui kaedah pengoksidaan terma adalah sangat penting bagi aplikasi peranti kuasa tinggi (> 600 V)

The design model of solar powered automatic bell system integrated with smoke detection for educational institution application

The work presents a design model of renewable energy based automatic bell system integrated with smoke detection, which uses solar energy as main power source. This design model is highly recommended to be installed in schools and learning institution, particularly in rural area as the power supply is the main constraint. In this work, the design which incorporates of the bell system, smoke detection and LCD display are presented using design software and their function is initialized using a programming language. The system model is designed to trigger bell at prescribed interval hours during school sessions. On the other hand, the design also includes a smoke sensor integrated with the bell system which triggers the bell during fire break out. The results outcome of this system is discussed accordingly. This design model is expected to save costs and enhance efficiency in power utilization using renewable energy as the main source of energy. In addition, the safety feature of the smoke detector is expected to safeguard school or institution from losses and damages caused by fire outbreak

Dielectric spectroscopy on mixture of rice husk, rice husk ash and rice bran from 4 Hz to 1 MHz

In this study, mixtures of rice husk/rice husk ashes (RHA) with RB on different ratios were prepared. Dielectric permittivity (ε'), loss factor (ε") and AC conductivity (σ') were measured in the frequency range of 4 Hz to 1 MHz in ambient temperature. Results for mixture of RHA and RB indicate that a dipolar relaxation occurring between 103 - 105 Hz and the peak is depressed and shifted to lower frequency as the RB content increases in the mixture. Moreover, AC conductivity decreases as the RB content increase. This may attributed to production of natural oil content from RB. In contrast, a dielectric characteristic for RH is generally not affected by the RB contents. This study explore dielectric characteristic of mixture between RH/RHA and RB in low frequency range because lack of literature is reported on low frequency response. Additionally, the potential application of RH/RHA and RB could be explored in effort to diminish waste disposal and enhance environmental protection