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Significance and requirements of semiconductor particle control
2022-07-05 07:39:00 【particle counter 】
Semiconductors specifically refer to materials with conductivity between conductors and insulators at room temperature , Semiconductors in integrated circuits 、 Consumer electronics 、 communication system 、 Photovoltaic power generation 、 lighting 、 High power power conversion and other fields have applications , For example, diodes are devices made of semiconductors .
Physical definition of semiconductor
There are many forms of material existence , solid 、 Liquid 、 Gas 、 Plasma and so on . We usually treat materials with poor conductivity , Like coal 、 Intraocular lens 、 amber 、 Ceramics are called insulators . Metals with good conductivity, such as gold 、 silver 、 copper 、 iron 、 tin 、 Aluminum, etc. are called conductors . The material between conductor and insulator can be simply called semiconductor . Compared with conductors and insulators , The discovery of semiconductor materials is the latest , until 20 century 30 years , When the purification technology of materials is improved , The existence of semiconductors is really recognized by academia . Semiconductors are materials with conductivity between conductors and insulators at room temperature . Semiconductor refers to a kind of controllable conductivity , Materials ranging from insulator to conductor . From the perspective of science and technology and economic development Look at , Semiconductors affect people's daily work and life , until 20 century 30 In the s, this material was recognized by the academic circles .
Semiconductor classification and performance
①. Element semiconductor . Elemental semiconductors refer to semiconductors composed of single elements , Among them, silicon 、 Selenium research is relatively early .
②. Inorganic compound semiconductor . Inorganic compounds mainly form semiconductor materials through single elements , Of course, there are also semiconductor materials composed of many elements. This half of the conductor is mainly used in high-speed devices ,InP Transistors are made faster than other materials , Mainly used in optoelectronic integrated circuits 、 In anti nuclear radiation devices . For materials with high conductivity , It is mainly used for LED Other aspects .
③. Organic compound semiconductor . Organic compounds refer to compounds containing carbon bonds in molecules , Put organic compounds perpendicular to carbon bonds , The superposition method can form the conduction band , Through chemical addition , It can enter the energy band , This can cause conductivity , Thus, organic compound semiconductors are formed .
④. Amorphous semiconductor . It is also called amorphous semiconductor or glass semiconductor , It belongs to a class of semiconducting materials .
⑤. Intrinsic semiconductor : Semiconductors without impurities and lattice defects are called intrinsic semiconductors . At a very low temperature , The valence band of semiconductors is full , After being excited by heat , Some electrons in the valence band will cross the forbidden band and enter the empty band with higher energy , Electrons in the empty band become the conduction band , The absence of an electron in the valence band forms a positively charged vacancy , It's called a hole .
Plody 0.1 Micron liquid particle counter 、 Electronic semiconductor cleanliness detector can be used for cleaning agents 、 semiconductor 、 Ultra pure water 、 Electronic products, 、 Mobile phone glass 、 plate glass 、 Online particle monitoring and analysis of silicon wafer and other products , At present, it is an important product of British plody analysis and testing group for micro nano combination detection in the field of water quality .
Product advantage :
application : Innovative oil-water dual system 、 Multi purpose 、 Multi module condition ;
technology : Application of the seventh generation double laser narrow light detection technology ;
Software : Analyze, test and calibrate the measurement phase separation to eliminate interference ;
Output :IPAD Data acquisition technology using ;
standard : Separation of civil standards and special standards .
Online advantages : Cleaning agent 、 semiconductor 、 Ultra pure water 、 Electronic products, 、 Mobile phone glass 、 plate glass 、 Online particle monitoring and analysis of silicon wafer and other products , All are PMT-2 The classic application place of micro nano monitor , And it is an important part of the production line . On-line 、 Continuous sampling 、 Alarm prompt , Be able to master the diagnosis and trend of particle pollution .
Offline advantage : Mobile measurement and fixed measurement of particle size and how many dual-mode , Solve the production process problem of continuous tracking and monitoring , Whether you are measuring or cleaning, tracking and monitoring , Will provide you with a perfect test plan , Make your test faster .
0.1 Product introduction of micron liquid particle counter :
0.1 Micron liquid particle counter 、 Electronic semiconductor cleanliness detector can measure the particle size of liquid 、 Monitoring and analysis of cleanliness and pollutants ; Cleaning agent 、 Liquid medicine 、 Test of insoluble particles in pure solution and ultra pure water .
0.1 Micron liquid particle counter 、 The electronic semiconductor cleanliness detector adopts the core technology of British plody —“ Micro laser measurement of particles ”, And adopt classic methods , Built in users need a variety of Standards .
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