Class information for:
Level 2: HETEROJUNCTION BIPOLAR TRANSISTORS//HETEROJUNCTION BIPOLAR TRANSISTORS HBTS//HETEROJUNCTION BIPOLAR TRANSISTOR HBT

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
1700 6150 15.5 50%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 3)


ID, lev.
above		 Publications Label for level above
87 77161 SEMICONDUCTOR LASERS//IEEE JOURNAL OF QUANTUM ELECTRONICS//JOURNAL OF CRYSTAL GROWTH

Classes in level below (level 1)


ID, lev. below Publications Label for level below
1717 2441 HETEROJUNCTION BIPOLAR TRANSISTORS//HETEROJUNCTION BIPOLAR TRANSISTOR//HBT
9671 1066 A AMA MICROELECT SCI TECHNOL//SIGEHBT//SIGE HBT
9675 1066 OPEN CIRCUIT VOLTAGE DECAY OCVD//APPARENT BAND GAP NARROWING//EQUIVALENT DIAGRAM
12141 864 PASSIVATED CONTACT//POLYSILICON EMITTER//CLOCK ACCESS TIME
24466 260 BEAM CHANNEL TRANSISTOR//IMPURITY ENHANCED OXIDATION//BIPOLAR MODE FIELD EFFECT TRANSISTORS BMFETS
26185 215 HORIZONTAL CURRENT BIPOLAR TRANSISTOR HCBT//DYNAMIC THRESHOLD MOSFET DTMOS//LATERAL BIPOLAR TRANSISTOR
31615 120 ULTRAVIOLET LIGHT DETECTORS//ORIENTATION OF MOLECULES//BORON CHEMICAL VAPOR DEPOSITION
31773 118 POST IMPLANTATION DEFECTS//MULTI INTERFACE SOLAR CELL//PLANAR NANOSTRUCTURE

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 HETEROJUNCTION BIPOLAR TRANSISTORS Author keyword 80 40% 3% 158
2 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS Author keyword 65 55% 1% 82
3 HETEROJUNCTION BIPOLAR TRANSISTOR HBT Author keyword 64 42% 2% 116
4 HETEROJUNCTION BIPOLAR TRANSISTOR Author keyword 61 42% 2% 112
5 HBT Author keyword 60 28% 3% 186
6 BIPOLAR TRANSISTORS Author keyword 43 34% 2% 103
7 BASE TRANSIT TIME Author keyword 29 88% 0% 14
8 A AMA MICROELECT SCI TECHNOL Address 28 44% 1% 47
9 POTENTIAL SPIKE Author keyword 27 76% 0% 19
10 BIPOLAR DEVICES Author keyword 27 44% 1% 46

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 HETEROJUNCTION BIPOLAR TRANSISTORS 80 40% 3% 158 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS
2 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS 65 55% 1% 82 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS
3 HETEROJUNCTION BIPOLAR TRANSISTOR HBT 64 42% 2% 116 Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT
4 HETEROJUNCTION BIPOLAR TRANSISTOR 61 42% 2% 112 Search HETEROJUNCTION+BIPOLAR+TRANSISTOR Search HETEROJUNCTION+BIPOLAR+TRANSISTOR
5 HBT 60 28% 3% 186 Search HBT Search HBT
6 BIPOLAR TRANSISTORS 43 34% 2% 103 Search BIPOLAR+TRANSISTORS Search BIPOLAR+TRANSISTORS
7 BASE TRANSIT TIME 29 88% 0% 14 Search BASE+TRANSIT+TIME Search BASE+TRANSIT+TIME
8 POTENTIAL SPIKE 27 76% 0% 19 Search POTENTIAL+SPIKE Search POTENTIAL+SPIKE
9 BIPOLAR DEVICES 27 44% 1% 46 Search BIPOLAR+DEVICES Search BIPOLAR+DEVICES
10 SIGEHBT 26 37% 1% 57 Search SIGEHBT Search SIGEHBT

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 HBTS 231 57% 5% 277
2 HETEROJUNCTION BIPOLAR TRANSISTORS 224 40% 7% 440
3 BIPOLAR TRANSISTORS 142 39% 5% 285
4 CURRENT GAIN 132 61% 2% 141
5 OFFSET VOLTAGE 90 80% 1% 56
6 SURFACE RECOMBINATION CURRENT 49 94% 0% 17
7 77 K APPLICATIONS 44 88% 0% 21
8 CHARGE CONTROL RELATION 35 89% 0% 16
9 HBT 33 46% 1% 53
10 ALGAAS GAAS HBTS 30 59% 1% 34

Journals

Reviews


Title Publ. year Cit. Active
references		 % act. ref.
to same field
SiGe HBT technology: A new contender for Si-based RF and microwave circuit applications 1998 197 40 53%
Scaling of SiGe heterojunction bipolar transistors 2005 31 29 52%
POLYSILICON EMITTERS FOR BIPOLAR-TRANSISTORS - A REVIEW AND REEVALUATION OF THEORY AND EXPERIMENT 1992 38 49 94%
Photovoltaic phenomena in inhomogeneous semiconductors 2003 4 5 100%
SILICON BIPOLAR DEVICE STRUCTURES FOR DIGITAL APPLICATIONS - TECHNOLOGY TRENDS AND FUTURE-DIRECTIONS 1995 13 48 81%
SiGe HBT for application in BiCMOS technology: II. Design, technology and performance 2001 20 29 45%
REVIEW OF ANALYTICAL MODELS FOR THE STUDY OF HIGHLY DOPED REGIONS OF SILICON DEVICES 1989 30 12 100%
Methods for Determining the Emitter Resistance in SiGe HBTs: A Review and an Evaluation Across Technology Generations 2015 0 16 94%
GAAS HBTS FOR MICROWAVE INTEGRATED-CIRCUITS 1993 16 50 80%
THEORY OF BAND TAILS IN HEAVILY DOPED SEMICONDUCTORS 1992 59 42 26%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 A AMA MICROELECT SCI TECHNOL 28 44% 0.8% 47
2 CSDL 7 50% 0.2% 10
3 INP IC TEAM 6 100% 0.1% 4
4 WIDE BAND G SEMICOND MAT DEVICES CHIN 6 100% 0.1% 4
5 UMR 5818 CNRS 3 57% 0.1% 4
6 MICROELECT SEMICOND DEV 3 60% 0.0% 3
7 DELFT MICROSYST NANOELECT DIMES 3 21% 0.2% 11
8 NANOTECHNOL RD 3 30% 0.1% 7
9 QNERC 2 67% 0.0% 2
10 RF OEICS 2 67% 0.0% 2

Related classes at same level (level 2)


Rank Relatedness score Related classes
1 0.0000016497 ADV SUBSUR E IMAGING//PHOTODETECTORS//PHOTODIODES
2 0.0000014823 NANOELECT GIGASCALE SYST//ELECTROSTATIC DISCHARGE ESD//SILICON CONTROLLED RECTIFIER SCR
3 0.0000013869 LT GAAS//ULTRAHIGH FREQUENCY SEMICOND ELECT//LOW TEMPERATURE GROWN GAAS
4 0.0000013183 IEEE JOURNAL OF SOLID-STATE CIRCUITS//CLOCK AND DATA RECOVERY CDR//PHASE LOCKED LOOP PLL
5 0.0000012691 EDGE DEFINED FILM FED GROWTH//MULTICRYSTALLINE SILICON//PROGRESS IN PHOTOVOLTAICS
6 0.0000011751 GAAS ON SI//GAAS SI//GAINP
7 0.0000011639 LOW FREQUENCY NOISE//1 F NOISE//LOW FREQUENCY LF NOISE
8 0.0000010109 SIGE//GERMANIUM//STRAINED SI
9 0.0000009049 QUASI NEUTRAL LIMIT//COMPRESSIBLE NAVIER STOKES EQUATIONS//DENSITY DEPENDENT VISCOSITY
10 0.0000008848 IEEE TRANSACTIONS ON ELECTRON DEVICES//IEEE ELECTRON DEVICE LETTERS//SOLID-STATE ELECTRONICS