Class information for:
Level 1: LIGHT EXTRACTION EFFICIENCY//LIGHT EMITTING DIODE LED//LIGHT EXTRACTION

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
2345 2275 18.8 84%


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
2 4 MATERIALS SCIENCE, MULTIDISCIPLINARY//PHYSICS, APPLIED//PHYSICS, CONDENSED MATTER 2836879
178 3       GAN//PHYSICS, APPLIED//GALLIUM NITRIDE 57874
20 2             GAN//GALLIUM NITRIDE//NITRIDES 36496
2345 1                   LIGHT EXTRACTION EFFICIENCY//LIGHT EMITTING DIODE LED//LIGHT EXTRACTION 2275

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 LIGHT EXTRACTION EFFICIENCY authKW 745802 4% 65% 85
2 LIGHT EMITTING DIODE LED authKW 550340 7% 26% 160
3 LIGHT EXTRACTION authKW 543530 4% 51% 80
4 LIGHT EMITTING DIODES authKW 447835 16% 9% 354
5 PATTERNED SAPPHIRE SUBSTRATE authKW 433821 2% 79% 41
6 LIGHT EMITTING DIODES LEDS authKW 400312 6% 23% 128
7 CURRENT SPREADING authKW 299848 2% 62% 36
8 ALGAINP authKW 267971 2% 37% 54
9 GAN authKW 266936 14% 6% 310
10 PATTERNED SAPPHIRE SUBSTRATE PSS authKW 249818 1% 85% 22

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Physics, Applied 22681 63% 0% 1437
2 Optics 10753 29% 0% 664
3 Engineering, Electrical & Electronic 6442 32% 0% 734
4 Materials Science, Multidisciplinary 2108 24% 0% 538
5 Nanoscience & Nanotechnology 1495 9% 0% 216
6 Physics, Condensed Matter 1100 13% 0% 305
7 Materials Science, Coatings & Films 668 4% 0% 99
8 Physics, Multidisciplinary 157 6% 0% 127
9 Crystallography 91 2% 0% 54
10 Electrochemistry 71 2% 0% 49

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ADV OPTOELECT TECHNOL 152452 6% 8% 142
2 SEMICOND LIGHTING TECHNOL DEV 132744 1% 34% 29
3 CF TECHNOL 120783 0% 100% 9
4 LED BUSINESS 108230 1% 37% 22
5 SEMICOND CHEM ENGN 90176 3% 9% 77
6 ELE OOPT ENGN 88797 8% 4% 181
7 LED DEVICE 85457 0% 58% 11
8 CHIP DEV GRP 64942 0% 44% 11
9 ELE OOPT SCI ENGN 63605 2% 9% 51
10 BEIJING OPTOELECT TECHNOL 61603 1% 31% 15

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 IEEE PHOTONICS TECHNOLOGY LETTERS 36797 9% 1% 211
2 JOURNAL OF DISPLAY TECHNOLOGY 8666 1% 2% 29
3 APPLIED PHYSICS LETTERS 7244 11% 0% 248
4 JAPANESE JOURNAL OF APPLIED PHYSICS 7206 4% 1% 93
5 ELECTROCHEMICAL AND SOLID STATE LETTERS 6863 2% 1% 47
6 ECS SOLID STATE LETTERS 6293 1% 4% 13
7 APPLIED PHYSICS EXPRESS 5812 2% 1% 40
8 OPTICS EXPRESS 5739 5% 0% 122
9 IEEE ELECTRON DEVICE LETTERS 4586 2% 1% 56
10 ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY 3698 1% 1% 19

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 LIGHT EXTRACTION EFFICIENCY 745802 4% 65% 85 Search LIGHT+EXTRACTION+EFFICIENCY Search LIGHT+EXTRACTION+EFFICIENCY
2 LIGHT EMITTING DIODE LED 550340 7% 26% 160 Search LIGHT+EMITTING+DIODE+LED Search LIGHT+EMITTING+DIODE+LED
3 LIGHT EXTRACTION 543530 4% 51% 80 Search LIGHT+EXTRACTION Search LIGHT+EXTRACTION
4 LIGHT EMITTING DIODES 447835 16% 9% 354 Search LIGHT+EMITTING+DIODES Search LIGHT+EMITTING+DIODES
5 PATTERNED SAPPHIRE SUBSTRATE 433821 2% 79% 41 Search PATTERNED+SAPPHIRE+SUBSTRATE Search PATTERNED+SAPPHIRE+SUBSTRATE
6 LIGHT EMITTING DIODES LEDS 400312 6% 23% 128 Search LIGHT+EMITTING+DIODES+LEDS Search LIGHT+EMITTING+DIODES+LEDS
7 CURRENT SPREADING 299848 2% 62% 36 Search CURRENT+SPREADING Search CURRENT+SPREADING
8 ALGAINP 267971 2% 37% 54 Search ALGAINP Search ALGAINP
9 GAN 266936 14% 6% 310 Search GAN Search GAN
10 PATTERNED SAPPHIRE SUBSTRATE PSS 249818 1% 85% 22 Search PATTERNED+SAPPHIRE+SUBSTRATE+PSS Search PATTERNED+SAPPHIRE+SUBSTRATE+PSS

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.


Rank Reference # ref. in
cl.		 Shr. of ref. in
cl.		 Citations
1 ZHMAKIN, AI , (2011) ENHANCEMENT OF LIGHT EXTRACTION FROM LIGHT EMITTING DIODES.PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS. VOL. 498. ISSUE 4-5. P. 189 -241 162 28% 122
2 GENG, C , WEI, TB , WANG, XQ , SHEN, DZ , HAO, ZB , YAN, QF , (2014) ENHANCEMENT OF LIGHT OUTPUT POWER FROM LEDS BASED ON MONOLAYER COLLOIDAL CRYSTAL.SMALL. VOL. 10. ISSUE 9. P. 1668 -1686 74 42% 13
3 KIM, JY , JEONG, T , LEE, SH , OH, HS , PARK, HJ , KIM, SM , BAEK, JH , (2013) LIGHT EXTRACTION EFFICIENCY PART B. LIGHT EXTRACTION OF HIGH EFFICIENT LEDS.III-NITRIDE BASED LIGHT EMITTING DIODES AND APPLICATIONS. VOL. 126. ISSUE . P. 271 -290 49 72% 0
4 LIN, TH , WANG, SJ , HUNG, CH , (2017) ENHANCED LIGHT EXTRACTION OF GAN-BASED VERTICAL LEDS WITH PATTERNED TRENCHES AND NANOSTRUCTURES.MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING. VOL. 57. ISSUE . P. 77 -82 28 90% 0
5 CUI, L , WANG, GG , ZHANG, HY , ZHOU, FQ , HAN, JC , (2012) PROGRESS IN PREPARATION OF PATTERNED SAPPHIRE SUBSTRATE FOR GAN-BASED LIGHT EMITTING DIODES.JOURNAL OF INORGANIC MATERIALS. VOL. 27. ISSUE 9. P. 897 -905 35 71% 0
6 GUO, H , ZHANG, X , CHEN, HJ , LIU, HG , ZHANG, PY , LIAO, QH , HU, SJ , CHANG, HD , SUN, B , WANG, SK , ET AL (2013) HIGH-PERFORMANCE GAN-BASED LIGHT-EMITTING DIODES ON PATTERNED SAPPHIRE SUBSTRATE WITH A NOVEL PATTERNED SIO2/AL2O3 PASSIVATION LAYER.APPLIED PHYSICS EXPRESS. VOL. 6. ISSUE 7. P. - 25 96% 2
7 CHEN, ZX , LIU, WJ , WAN, W , CHEN, GY , ZHANG, BJ , JIN, CJ , (2016) IMPROVING THE EXTRACTION EFFICIENCY OF PLANAR GAN-BASED BLUE LIGHT-EMITTING DIODES VIA OPTIMIZING INDIUM TIN OXIDE NANODISC ARRAYS.JOURNAL OF DISPLAY TECHNOLOGY. VOL. 12. ISSUE 12. P. 1588 -1593 32 71% 0
8 YUE, QY , LI, K , KONG, FM , ZHAO, J , LIU, M , (2016) ANALYSIS ON THE EFFECT OF AMORPHOUS PHOTONIC CRYSTALS ON LIGHT EXTRACTION EFFICIENCY ENHANCEMENT FOR GAN-BASED THIN-FILM-FLIP-CHIP LIGHT-EMITTING DIODES.OPTICS COMMUNICATIONS. VOL. 367. ISSUE . P. 72 -79 29 73% 1
9 CHEN, ZX , REN, Y , XIAO, GH , LI, JT , CHEN, X , WANG, XH , JIN, CJ , ZHANG, BJ , (2014) ENHANCING LIGHT EXTRACTION OF GAN-BASED BLUE LIGHT-EMITTING DIODES BY A TUNED NANOPILLAR ARRAY.CHINESE PHYSICS B. VOL. 23. ISSUE 1. P. - 24 92% 7
10 CHEN, ZX , LIU, WJ , WAN, W , CHEN, GY , CHEN, YZ , ZHANG, BJ , JIN, CJ , (2016) PERFORMANCE OF GAN-BASED LEDS WITH NANOPATTERNED INDIUM TIN OXIDE ELECTRODE.JOURNAL OF NANOMATERIALS. VOL. . ISSUE . P. - 23 96% 0

Classes with closest relation at Level 1


Rank Class id link
1 9708 JUNCTION TEMPERATURE//REMOTE PHOSPHOR//HIGH POWER LED
2 8713 OHMIC CONTACT//P GAN//P TYPE GAN
3 16807 SOCIOTECHNO SCI TECHNOL//SEMICONDUCTOR ELECTROLYTE CONTACTS//MAT STUDY TESTING
4 344 INGAN//EFFICIENCY DROOP//LIGHT EMITTING DIODES
5 3942 GAN//METALORGANIC CHEMICAL VAPOR DEPOSITION//NITRIDES
6 31016 GRUNBERG//CRHEA UP//CRITICAL STACK THICKNESS
7 16944 ALINN//INALN//AL1 XINXN
8 19151 RESONANT CAVITY LIGHT EMITTING DIODES RCLEDS//RESONANT CAVITY LIGHT EMITTING DIODES//MICROCAV GRP
9 16392 ENHANCED NEAR BAND EDGE EMISSION//ZNO EXCITONS//SURFACE PLASMONS
10 25274 VAPOR COOLING CONDENSATION SYSTEM//EFFICIENCY GAIN PRODUCT//ZNO GAN

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