Semiconductors are crystalline or amorphous solids with distinct electrical characteristics. They are of high resistance — higher than typical resistance materials, but still of much lower resistance than insulators. Their resistance decreases as their temperature increases, which is behavior opposite to that of a metal. Finally, their conducting properties may be altered in useful ways by the deliberate, controlled introduction of impurities ("doping") into the crystal structure, which lowers its resistance but also permits the creation of semiconductor junctions between differently-doped regions of the extrinsic semiconductor crystal. The behavior of charge carriers which include electrons, ions and electron holes at these junctions is the basis of diodes, transistors and all modern electronics.
Semiconductor devices can display a range of useful properties such as passing current more easily in one direction than the other, showing variable resistance, and sensitivity to light or heat. Because the electrical properties of a semiconductor material can be modified by doping, or by the application of electrical fields or light, devices made from semiconductors can be used for amplification, switching, and energy conversion.
The modern understanding of the properties of a semiconductor relies on quantum physics to explain the movement of charge carriers in a crystal lattice. Doping greatly increases the number of charge carriers within the crystal. When a doped semiconductor contains mostly free holes it is called "p-type", and when it contains mostly free electrons it is known as "n-type". The semiconductor materials used in electronic devices are doped under precise conditions to control the concentration and regions of p- and n-type dopants. A single semiconductor crystal can have many p- and n-type regions; the p–n junctions between these regions are responsible for the useful electronic behavior.
Although some pure elements and many compounds display semiconductor properties, silicon, germanium, and compounds of gallium are the most widely used in electronic devices. Elements near the so-called "metalloid staircase", where the metalloids are located on the periodic table, are usually used as semiconductors.
Some of the properties of semiconductor materials were observed throughout the mid 19th and first decades of the 20th century. The first practical application of semiconductors in electronics was the 1904 development of the Cat's-whisker detector, a primitive semiconductor diode widely used in early radio receivers. Developments in quantum physics in turn allowed the development of the transistor in 1947 and the integrated circuit in 1958. - Wikipedia
Tawaran Khas untuk lepasan SPM/STPM/STAM/Diploma/Matrikulasi/Asasi Sempena Ulang Tahun ke 20 ICYM
- Biasiswa Penginapan dan Pengangkutan bagi Program Diploma dan Ijazah
- Pembiayaan/Penajaan Penuh daripada PTPK bagi Program Sijil
Foundation / Diploma Foundation In Information Technology Foundation In Management Diploma In Entrepreneurship Diploma In Marketing Diploma In Accountancy Diploma In Islamic Financial Planning Diploma In Culinary Arts Diploma In Hotel Management Diploma In Tourism Management Diploma In Animation Technology Diploma In Media Technology Diploma In Theatrical Arts And Technology Diploma In Multimedia Technology Diploma In Information Technology Diploma In Computer Networking Diploma In Cyber Security Diploma In Electrical Technology Diploma In Industrial Electronic Technology Diploma In Early Childhood Education Diploma In Guidance & Counseling Diploma In Aircraft Maintenance Technology Kerjasama Universiti Teknologi Malaysia Diploma In Technology Management (UTM) Diploma In Technology Management (Accounting) (UTM) Diploma In Computer Science (Information Technology) (UTM) Sarjana Muda Sains (Pembangunan Sumber Manusia) (UTM) Sarjana Muda Pengurusan (Pemasaran) (UTM) Sarjana Muda Sains Komputer (Perisian Grafik & Multimedia) (UTM) Sarjana Muda Sains Komputer (Rangkaian & Keselamatan) (UTM) Professional License Aircraft Maintenance License Technician (AML-T) DCAM-PT-66 CAT A1 Aircraft Maintenance License Engineer (AML-E) DCAM-PT-66 CAT B1-1 Sijil Kemahiran Malaysia (SKM) / Short Course Lukisan Pelan Senibina / Juruteknik Elektrik / Teknologi Automotif / Pembuatan Pastri Program Tajaan Ground Handling Management (GHM) PTPTN Bahagian Pengurusan Kemasukan Pelajar UPU KWSP YAYASAN PENERAJU UPEN PTPK TAPEM YAYASAN NEGERI ZAKAT MARA UNIVERSITI ISLAM ANTARABANGSA MALAYSIA (IIUM) UNIVERSITI KEBANGSAAN MALAYSIA (UKM) UNIVERSITI KEBANGSAAN MALAYSIA (UKM) UNIVERSITI MALAYA UNIVERSITI MALAYSIA KELANTAN (UMK) UNIVERSITI MALAYSIA PAHANG (UMP) UNIVERSITI MALAYSIA PERLIS (UNIMAP) UNIVERSITI MALAYSIA SABAH (UMS) UNIVERSITI MALAYSIA SARAWAK (UNIMAS) (KOTA SAMARAHAN) UNIVERSITI MALAYSIA TERENGGANU (UMT) UNIVERSITI PENDIDIKAN SULTAN IDRIS (UPSI) UNIVERSITI PERTAHANAN NASIONAL MALAYSIA UNIVERSITI PUTRA MALAYSIA (UPM) UNIVERSITI SAINS ISLAM MALAYSIA (USIM) UNIVERSITI SAINS MALAYSIA (USM) UNIVERSITI SULTAN ZAINAL ABIDIN (UNISZA) UNIVERSITI TEKNIKAL MALAYSIA MELAKA (UTEM) UNIVERSITI TEKNOLOGI MALAYSIA (UTM) UNIVERSITI TEKNOLOGI MARA UNIVERSITI TUN HUSSEIN ONN MALAYSIA (UTHM) UNIVERSITI UTARA MALAYSIA (UUM)