Class information for:
Level 1: HETEROJUNCTION BIPOLAR TRANSISTORS//HBT//OFFSET VOLTAGE

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

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 HETEROJUNCTION BIPOLAR TRANSISTORS authKW 970580 9% 36% 177
2 HBT authKW 556137 6% 29% 128
3 OFFSET VOLTAGE authKW 278631 2% 48% 38
4 HETEROJUNCTION BIPOLAR TRANSISTOR HBT authKW 251433 3% 27% 62
5 POTENTIAL SPIKE authKW 250165 1% 86% 19
6 DHBT authKW 224101 1% 70% 21
7 INP INGAAS authKW 192081 1% 60% 21
8 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS authKW 178043 2% 28% 42
9 GRADED BASE authKW 167704 1% 100% 11
10 DOUBLE HETEROJUNCTION BIPOLAR TRANSISTORS DHBTS authKW 143134 1% 72% 13

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Engineering, Electrical & Electronic 29860 69% 0% 1434
2 Physics, Applied 13044 51% 0% 1054
3 Physics, Condensed Matter 2470 20% 0% 405
4 Nanoscience & Nanotechnology 130 4% 0% 78
5 Physics, Multidisciplinary 102 5% 0% 103
6 Materials Science, Coatings & Films 49 2% 0% 33
7 Materials Science, Multidisciplinary 37 7% 0% 143
8 Crystallography 27 2% 0% 34
9 Telecommunications 24 2% 0% 33
10 Optics 2 2% 0% 42

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 INP IC TEAM 60983 0% 100% 4
2 CSDL 44092 0% 32% 9
3 HIGH SPEED DEVICES GRP 30492 0% 100% 2
4 MICROWAVE PLICAT 23219 0% 19% 8
5 QNERC 20326 0% 67% 2
6 ULTRA HIGH SPEED COMMUN IC TEAM 20326 0% 67% 2
7 MILLIMETER WAVE ELECT GRP 15873 0% 21% 5
8 ADV COMPOUND SEMICOND ELECT GRP 15246 0% 100% 1
9 ADV DEVICE DEV GRP 15246 0% 100% 1
10 ADV DEVICES 3 4 15246 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 IEEE ELECTRON DEVICE LETTERS 92918 12% 3% 238
2 SOLID-STATE ELECTRONICS 90159 12% 2% 243
3 IEEE TRANSACTIONS ON ELECTRON DEVICES 75473 13% 2% 279
4 ELECTRONICS LETTERS 16749 10% 1% 210
5 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 8188 4% 1% 84
6 IEICE TRANSACTIONS ON ELECTRONICS 3958 2% 1% 40
7 SEMICONDUCTOR SCIENCE AND TECHNOLOGY 3713 2% 1% 45
8 INSTITUTE OF PHYSICS CONFERENCE SERIES 2952 2% 0% 44
9 IEEE MICROWAVE AND GUIDED WAVE LETTERS 2590 1% 1% 12
10 APPLIED PHYSICS LETTERS 2446 7% 0% 139

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 HETEROJUNCTION BIPOLAR TRANSISTORS 970580 9% 36% 177 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS
2 HBT 556137 6% 29% 128 Search HBT Search HBT
3 OFFSET VOLTAGE 278631 2% 48% 38 Search OFFSET+VOLTAGE Search OFFSET+VOLTAGE
4 HETEROJUNCTION BIPOLAR TRANSISTOR HBT 251433 3% 27% 62 Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT
5 POTENTIAL SPIKE 250165 1% 86% 19 Search POTENTIAL+SPIKE Search POTENTIAL+SPIKE
6 DHBT 224101 1% 70% 21 Search DHBT Search DHBT
7 INP INGAAS 192081 1% 60% 21 Search INP+INGAAS Search INP+INGAAS
8 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS 178043 2% 28% 42 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS
9 GRADED BASE 167704 1% 100% 11 Search GRADED+BASE Search GRADED+BASE
10 DOUBLE HETEROJUNCTION BIPOLAR TRANSISTORS DHBTS 143134 1% 72% 13 Search DOUBLE+HETEROJUNCTION+BIPOLAR+TRANSISTORS+DHBTS Search DOUBLE+HETEROJUNCTION+BIPOLAR+TRANSISTORS+DHBTS

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 1


rank cluster_id2 link
1 13640 CARBON DOPING//CBR4//INALAS ALLOYS
2 19217 SELF HEATING//CHARACTERISTIC THERMAL LENGTH//BALLASTING RESISTORS
3 7746 SIGEHBT//A AMA MICROELECT SCI TECHNOL//BIPOLAR TRANSISTORS
4 15295 DECISION CIRCUITS//MODULATOR DRIVER//IEEE JOURNAL OF SOLID-STATE CIRCUITS
5 19339 HETEROJUNCTION PHOTOTRANSISTOR//HETEROJUNCTION PHOTOTRANSISTOR HPT//PHOTOTRANSISTOR
6 25639 BIPRISM EFFECTS//ELECTRON WAVE DEVICES//FINE ELECTRODES
7 23615 GAASSB//INGAAS GAASSB//NON MARKOVIAN GAIN MODEL
8 31677 TRANSISTOR LASER//TRANSISTOR LASER TL//0 D QUANTUM WELLS
9 16233 BACKWARD DIODES//OPTOELECTRONIC SWITCH//MILLIMETER WAVE DETECTORS
10 26023 ALGAN GAN HBT//BULK GALLIUM NITRIDE GAN//BULK GAN SUBSTRATES

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