Class information for:
Level 2: HETEROJUNCTION BIPOLAR TRANSISTORS//SIGEHBT//HBT

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
1 4 PHYSICS, CONDENSED MATTER//PHYSICS, APPLIED//MATERIALS SCIENCE, MULTIDISCIPLINARY 2188495
13 3       PHYSICS, APPLIED//IEEE TRANSACTIONS ON ELECTRON DEVICES//SILICON 136516
1733 2             HETEROJUNCTION BIPOLAR TRANSISTORS//SIGEHBT//HBT 6879
3218 1                   HETEROJUNCTION BIPOLAR TRANSISTORS//HBT//OFFSET VOLTAGE 2067
7746 1                   SIGEHBT//A AMA MICROELECT SCI TECHNOL//BIPOLAR TRANSISTORS 1357
11099 1                   SOLAR CELLS//SOLID-STATE ELECTRONICS//HIGH LOW JUNCTION 1037
11891 1                   SOLAR CELLS//DEVICE FUNCT SECT//DIFFUSION TEMPERATURE 975
16004 1                   PASSIVATED CONTACT//PASSIVATING CONTACT//POLYSILICON EMITTER 705
20310 1                   EXPERIMENTAL SUGGESTION//TERNARY AND QUATERNARY MATERIALS//DIFFUSIVITY MOBILITY RELATIONSHIP 488
33386 1                   POST IMPLANTATION DEFECTS//MULTI INTERFACE SOLAR CELL//PLANAR NANOSTRUCTURE 139
35518 1                   FERMI DIRAC INTEGRAL//GENERALIZED FERMI DIRAC INTEGRAL//SOMMERFELD EXPANSION 111

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 HETEROJUNCTION BIPOLAR TRANSISTORS authKW 513803 3% 48% 235
2 SIGEHBT authKW 402277 2% 61% 144
3 HBT authKW 319332 3% 39% 177
4 SOLID-STATE ELECTRONICS journal 290670 12% 8% 796
5 IEEE TRANSACTIONS ON ELECTRON DEVICES journal 256352 14% 6% 938
6 HETEROJUNCTION BIPOLAR TRANSISTOR HBT authKW 208407 1% 44% 103
7 BIPOLAR TRANSISTORS authKW 204025 2% 31% 144
8 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS authKW 144321 1% 46% 69
9 A AMA MICROELECT SCI TECHNOL address 111271 1% 48% 51
10 BIPOLAR DEVICES authKW 86358 1% 44% 43

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Engineering, Electrical & Electronic 61327 55% 0% 3794
2 Physics, Applied 45684 52% 0% 3592
3 Physics, Condensed Matter 15028 26% 0% 1763
4 Materials Science, Coatings & Films 911 3% 0% 212
5 Materials Science, Multidisciplinary 805 11% 0% 768
6 Energy & Fuels 805 4% 0% 306
7 Physics, Multidisciplinary 609 6% 0% 415
8 Nanoscience & Nanotechnology 367 4% 0% 245
9 Nuclear Science & Technology 209 2% 0% 164
10 Telecommunications 37 1% 0% 90

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 A AMA MICROELECT SCI TECHNOL 111271 1% 48% 51
2 INP IC TEAM 18319 0% 100% 4
3 MIKROELEKT ZENTRUM A 18319 0% 100% 4
4 PHYS TECHNO PHYS 16482 0% 60% 6
5 CSDL 13236 0% 32% 9
6 ELECT DESIGN TECHNOL 13051 0% 14% 20
7 TSINGHUA INFORMAT TECHNOL 12210 0% 67% 4
8 NANO SCALE DEVICE 11579 0% 28% 9
9 MICROELECT 11238 3% 1% 213
10 UMR 5818 CNRS 10464 0% 57% 4

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SOLID-STATE ELECTRONICS 290670 12% 8% 796
2 IEEE TRANSACTIONS ON ELECTRON DEVICES 256352 14% 6% 938
3 IEEE ELECTRON DEVICE LETTERS 83273 6% 4% 412
4 SOLAR CELLS 80904 2% 14% 130
5 ELECTRON DEVICE LETTERS 11043 0% 9% 27
6 ELECTRONICS LETTERS 10629 5% 1% 310
7 JOURNAL OF APPLIED PHYSICS 9017 7% 0% 476
8 IEEE JOURNAL OF SOLID-STATE CIRCUITS 8816 2% 2% 129
9 SEMICONDUCTOR SCIENCE AND TECHNOLOGY 6247 2% 1% 107
10 SOLAR ENERGY MATERIALS AND SOLAR CELLS 4929 1% 1% 94

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 HETEROJUNCTION BIPOLAR TRANSISTORS 513803 3% 48% 235 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS
2 SIGEHBT 402277 2% 61% 144 Search SIGEHBT Search SIGEHBT
3 HBT 319332 3% 39% 177 Search HBT Search HBT
4 HETEROJUNCTION BIPOLAR TRANSISTOR HBT 208407 1% 44% 103 Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT
5 BIPOLAR TRANSISTORS 204025 2% 31% 144 Search BIPOLAR+TRANSISTORS Search BIPOLAR+TRANSISTORS
6 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS 144321 1% 46% 69 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS
7 BIPOLAR DEVICES 86358 1% 44% 43 Search BIPOLAR+DEVICES Search BIPOLAR+DEVICES
8 OFFSET VOLTAGE 83670 1% 48% 38 Search OFFSET+VOLTAGE Search OFFSET+VOLTAGE
9 POTENTIAL SPIKE 75143 0% 86% 19 Search POTENTIAL+SPIKE Search POTENTIAL+SPIKE
10 DHBT 73874 0% 73% 22 Search DHBT Search DHBT

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 2


rank cluster_id2 link
1 1564 MULTICRYSTALLINE SILICON//IEEE JOURNAL OF PHOTOVOLTAICS//SILICON SOLAR CELLS
2 2120 AVALANCHE PHOTODIODE//IMPACT IONIZATION//EXCESS NOISE FACTOR
3 1536 PHOTODIODE//PHOTODETECTORS//ENGINEERING, ELECTRICAL & ELECTRONIC
4 1718 IGBT//LDMOS//POWER MOSFET
5 4271 AT&T TECHNICAL JOURNAL//OPTOCOUPLER//ACTIVATION ENERGY OF RECOVERY
6 1594 POLYCRYSTALLINE SILICON//POLY SI//THIN FILM TRANSISTORS
7 893 SIGE//STRAINED SI//GERMANIUM
8 2119 IEEE JOURNAL OF SOLID-STATE CIRCUITS//FREQUENCY SYNTHESIZER//PHASE LOCKED LOOP PLL
9 3941 NONEQUILIBRIUM CHARGE CARRIERS//REVERSELY SWITCHED DYNISTOR RSD//NONEQUILIBRIUM CARRIERS
10 222 JOURNAL OF CRYSTAL GROWTH//PHYSICS, APPLIED//GAAS

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