Class information for: |
Basic class information |
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 |
| 195 | 3 | GAN//GALLIUM NITRIDE//NITRIDES | 53830 |
| 22 | 2 | GAN//GALLIUM NITRIDE//INGAN | 36458 |
| 1789 | 1 | LIGHT EXTRACTION EFFICIENCY//LIGHT EXTRACTION//LIGHT EMITTING DIODES | 2518 |
Terms with highest relevance score |
| rank | Category | termType | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|---|
| 1 | LIGHT EXTRACTION EFFICIENCY | authKW | 745512 | 4% | 65% | 91 |
| 2 | LIGHT EXTRACTION | authKW | 569624 | 4% | 51% | 89 |
| 3 | LIGHT EMITTING DIODES | authKW | 507684 | 16% | 10% | 402 |
| 4 | LIGHT EMITTING DIODE LED | authKW | 507397 | 6% | 25% | 163 |
| 5 | LIGHT EMITTING DIODES LEDS | authKW | 402689 | 5% | 23% | 137 |
| 6 | CURRENT SPREADING | authKW | 384555 | 2% | 70% | 44 |
| 7 | PATTERNED SAPPHIRE SUBSTRATE | authKW | 357543 | 2% | 71% | 40 |
| 8 | GAN | authKW | 306037 | 14% | 7% | 352 |
| 9 | SEMICOND LIGHTING TECHNOL DEV | address | 284702 | 2% | 51% | 45 |
| 10 | ALGAINP | authKW | 248184 | 2% | 37% | 54 |
Web of Science journal categories |
| chi_square_rank | Category | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | Physics, Applied | 23564 | 61% | 0% | 1544 |
| 2 | Optics | 11029 | 28% | 0% | 710 |
| 3 | Engineering, Electrical & Electronic | 5737 | 29% | 0% | 740 |
| 4 | Materials Science, Multidisciplinary | 2702 | 25% | 0% | 638 |
| 5 | Nanoscience & Nanotechnology | 1780 | 10% | 0% | 252 |
| 6 | Physics, Condensed Matter | 1341 | 14% | 0% | 350 |
| 7 | Materials Science, Coatings & Films | 812 | 5% | 0% | 114 |
| 8 | Physics, Multidisciplinary | 167 | 5% | 0% | 138 |
| 9 | Electrochemistry | 83 | 2% | 0% | 56 |
| 10 | Crystallography | 57 | 2% | 0% | 49 |
Address terms |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | SEMICOND LIGHTING TECHNOL DEV | 284702 | 2% | 51% | 45 |
| 2 | LED BUSINESS | 175957 | 1% | 47% | 30 |
| 3 | CHIP DEV GRP | 150165 | 1% | 67% | 18 |
| 4 | ADV OPTOELECT TECHNOL | 147903 | 6% | 8% | 148 |
| 5 | SEMICOND CHEM ENGN | 146946 | 4% | 11% | 104 |
| 6 | CF TECHNOL | 112633 | 0% | 100% | 9 |
| 7 | ELE OOPT ENGN | 84426 | 7% | 4% | 185 |
| 8 | BEIJING OPTOELECT TECHNOL | 73790 | 1% | 35% | 17 |
| 9 | LED DEVICE | 65858 | 0% | 53% | 10 |
| 10 | PHOTON PROJECT TEAM | 63348 | 0% | 56% | 9 |
Journals |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | IEEE PHOTONICS TECHNOLOGY LETTERS | 34174 | 8% | 1% | 213 |
| 2 | ELECTROCHEMICAL AND SOLID STATE LETTERS | 10453 | 2% | 1% | 60 |
| 3 | JOURNAL OF DISPLAY TECHNOLOGY | 9227 | 1% | 2% | 31 |
| 4 | APPLIED PHYSICS LETTERS | 8249 | 11% | 0% | 276 |
| 5 | JAPANESE JOURNAL OF APPLIED PHYSICS | 7307 | 4% | 1% | 99 |
| 6 | APPLIED PHYSICS EXPRESS | 7114 | 2% | 1% | 47 |
| 7 | ECS SOLID STATE LETTERS | 6806 | 1% | 4% | 14 |
| 8 | OPTICS EXPRESS | 6233 | 5% | 0% | 135 |
| 9 | IEEE ELECTRON DEVICE LETTERS | 4438 | 2% | 1% | 58 |
| 10 | ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | 4069 | 1% | 1% | 22 |
Author Key Words |
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 |