semiconductor
Let an agent explain semiconductors and their physics, relay materials, doping, devices and industry from physics and engineering sources, describe the forms the registry aliases name, and distinguish semiconductors as materials from semiconductor devices, from the chip industry and from superconductors.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What a semiconductor is.
Definition
Definition.
Definition
Definition.
- What is a semiconductor, and how does it differ from devices, the chip industry and superconductors? definition
- Is the question about physics, a material, a device, manufacturing or policy? boundary
Forms
Forms.
Forms
Forms.
- What are crystalline, amorphous, polymer, stretchable and nanocrystal semiconductors, and intrinsic versus extrinsic? definition
- Which entry fits the specific form? action
Physics Physics.
Bands
Band theory.
Bands
Bands.
- How do band gaps, carriers and doping explain semiconductor behaviour? provenance
- Which references are standard? provenance
Junctions
Junctions.
Junctions
Junctions.
- How do p-n junctions and heterostructures work? provenance
- Which sources are cited? provenance
Technology Devices and industry.
Devices
Devices.
Devices
Devices.
- How are transistors, solar cells, LEDs and lasers built from semiconductors? provenance
- Which entry fits the specific device? action
Industry
Industry.
Industry
Industry.
- How are semiconductors manufactured, and how is the industry structured, with policy debates attributed? provenance
- Which entry fits semiconductor industry? action
Context Frontiers and history.
Frontiers
Frontiers.
Frontiers
Frontiers.
- What are quantum dots, 2D semiconductors and flexible electronics? provenance
- Which entry fits quantum dot? action
History
History.
History
History.
- How did semiconductor science develop from early rectifiers to the transistor and integrated circuit? provenance
- Which entry fits the history of the transistor? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- semiconductor nanocrystal, quantum dot, semiconducting polymer, amorphous silicon, stretchable semiconductor, extrinsic semiconductor, amorphous semiconductor, Nitride semiconductor, diamond semiconductor, oxide semiconductor, integrated circuits & chip, intrinsic semiconductor
What it is Filled
A material with electrical conductivity between that of a conductor and an insulator, which can be controlled by doping, temperature, light or applied fields, including crystalline silicon and germanium, compound semiconductors such as gallium arsenide, amorphous silicon used in thin-film devices, semiconducting polymers, stretchable semiconductors for flexible electronics, and semiconductor nanocrystals or quantum dots; intrinsic semiconductors are pure and extrinsic ones are doped, and semiconductors are the basis of transistors, integrated circuits, solar cells and LEDs.
Why it exists Filled
Let an agent explain semiconductors and their physics, relay materials, doping, devices and industry from physics and engineering sources, describe the forms the registry aliases name, and distinguish semiconductors as materials from semiconductor devices, from the chip industry and from superconductors.
Distinguishing features Filled
- Band gap
- Doping control
- Many material forms
- Device basis
What robots and AI may and may not do Filled
Must not
- Handle toxic compound semiconductor materials or process gases outside the facility's safety rules.
- Help evade export controls on advanced semiconductor materials or equipment.
- Falsify test or purity data for wafers or materials.
- Dispose of semiconductor processing waste outside approved routes.
Only with a human decision
- Shipping controlled materials or technology across borders.
- Releasing a batch that failed a quality check.
May
- Explain semiconductor materials and how doping changes their conductivity.
- Track inventory, test data and handling records of semiconductor materials in a facility it is authorized to serve.
Moral aspects Filled
- Semiconductor production uses toxic substances that endanger workers and nearby water.
- Supply of chips shapes economic and military power between states.
Who is affected
- Fab workers
- Communities near plants
- Users of electronic devices
Owners Filled
Steward
The manufacturer or facility that holds the material.
Links to other meta-models Filled
parent
- Q124291 - registry parent class
- Q214609 - registry parent class
related
- material - in registry terms
- electrical conductor - partially, in registry terms
- transistor - and integrated circuits
- insulator - and conductor
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.semiconductor
- Wikidata: Q11456 (https://www.wikidata.org/wiki/Q11456)
Direct properties required Filled
- silicon band gap: 1.12 eV - at 300 K
- gallium arsenide band gap: 1.42 eV
- transistor invented: 1947 year - Bell Labs
- quantum dot size: about 2-10 nm
Recognition required Filled
- Material with controllable conductivity
- Silicon, gallium arsenide, amorphous silicon, semiconducting polymer, quantum dot, extrinsic semiconductor
- Devices are made from the material; the industry makes chips; superconductors have zero resistance
- Grey crystalline solids such as silicon wafers, or thin films and polymers.
Capabilities and actions required Filled
- explain the physics
- relay materials and devices
- describe forms
- distinguish related concepts
Hazards and failure modes required Filled
- Confusing material with device or industry
- Registry aliases mixing materials, forms and nanostructures
- Partisan framing of chip geopolitics
Standards and interfaces required Filled
- SEMI industry standards
- Export controls on advanced semiconductor technology
- Chemical safety rules in fabrication
Context of use required Filled
- Making electronic and optoelectronic devices.
- elemental semiconductors silicon and germanium
- compound semiconductors such as GaAs and GaN
- amorphous and polycrystalline silicon
- organic and polymer semiconductors
- stretchable semiconductors
- semiconductor nanocrystals and quantum dots
- intrinsic and extrinsic semiconductors
Sources Filled
- Wikidata item Q11456: semiconductor - identity and sense of the item
- Wikipedia: Semiconductor - general description of the item
Open questions
- Should quantum dot and organic semiconductor be separate primary entries?
- How should physics and engineering sources be linked?
- The registry entry has merged aliases naming forms and nanostructures; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q11456/spec.json