The most commercially significant gallium uses are concentrated in compound semiconductors — materials that underpin modern electronics, 5G infrastructure, defence systems, and the clean energy transition. At $272.16/kg domestic China and $400/kg FOB as of April 2026, gallium trades at a premium that reflects its strategic scarcity: global primary production runs at approximately 300 tonnes per year, and China controls around 80% of it.
China’s August 2023 export controls on gallium — applied alongside germanium — restructured global supply chains overnight. For Western buyers, the controls accelerated procurement diversification and pushed gallium firmly into the critical minerals policy agenda across the US, EU, and Japan.
How We Ranked the Top 10 Gallium Uses
Entries are ranked by a combination of commercial consumption volume and strategic importance to semiconductor, defence, and energy supply chains. Gallium arsenide (GaAs) and gallium nitride (GaN) dominate by value; downstream applications in solar, medical, and emerging fields are ranked by growth trajectory and strategic relevance rather than current tonnage alone.
Top 10 Gallium Uses: Full Ranking
1. Compound Semiconductors (GaAs and GaN) — Primary Gallium Uses
Gallium arsenide (GaAs) and gallium nitride (GaN) account for the largest share of gallium consumption by value. GaAs wafers are foundational to high-frequency and high-efficiency electronics — including microwave devices, satellite communications, and radar. GaN has become the material of choice for high-power RF and power conversion applications.
Together, GaAs and GaN underpin the modern semiconductor stack in ways that silicon cannot replicate. Electron mobility in GaAs is approximately five times that of silicon; GaN operates at higher voltages, frequencies, and temperatures. These properties make compound semiconductors non-substitutable in performance-critical applications.
Compound semiconductor fabs consume gallium in wafer form at purities of 99.9999% (six nines) and above. Leading foundries include Win Semiconductors (Taiwan), Wolfspeed (NYSE: WOLF), and IQE (AIM: IQE).
2. LEDs and Laser Diodes
Gallium nitride is the core material in blue and white LEDs — the technology that enabled modern solid-state lighting. The 2014 Nobel Prize in Physics was awarded for the development of GaN-based LEDs, underscoring the scale of the technology shift. Today, LED lighting represents a significant share of global gallium consumption.
Laser diodes based on GaN and related compounds (InGaN, AlGaN) are used in Blu-ray optical storage, laser displays, and industrial cutting systems. The global transition away from fluorescent and incandescent lighting to LED continues to drive steady baseline demand for gallium in this segment.
Major producers of LED epitaxial wafers include Nichia (Japan), Cree (now Wolfspeed), and a cluster of Chinese manufacturers led by San’an Optoelectronics.
3. 5G and RF Power Amplifiers
GaN-on-silicon-carbide (GaN-on-SiC) is the dominant technology for 5G base station power amplifiers. The material’s high power density and efficiency at millimetre-wave frequencies make it the preferred choice for macro-cell and small-cell infrastructure. Ericsson, Nokia, and Huawei all use GaN-on-SiC in their 5G radio units.
As 5G rollout continues globally — with sub-6GHz networks expanding and mmWave deployments accelerating in urban markets — gallium demand from the RF segment is forecast to grow. The defence sector draws on the same GaN-on-SiC supply chain for electronic warfare systems and active electronically scanned array (AESA) radars.
China’s export controls introduced direct exposure risk for Western 5G equipment manufacturers, most of whom source processed gallium compounds from Chinese refiners. Inventory building and supply diversification have been the primary responses.
4. Solar Cells (Multi-Junction GaAs)
Multi-junction GaAs solar cells achieve conversion efficiencies above 30% — well above the 22–24% ceiling of commercial silicon cells — making them the technology of choice for space applications, concentrator photovoltaics (CPV), and high-altitude platforms. Every major satellite constellation uses GaAs-based power generation.
Terrestrial GaAs solar remains niche due to cost, but concentrator photovoltaic installations, which focus sunlight onto small GaAs cell arrays using optical lenses, have demonstrated economic viability in high-irradiance markets. Spectrolab (Boeing subsidiary) and Azur Space (Germany) are leading producers of space-grade GaAs cells.
5. Power Electronics — GaN-on-Silicon (EV and Data Centres)
GaN-on-silicon is the key growth area for gallium in power electronics. Unlike GaN-on-SiC, GaN-on-Si can be manufactured on standard silicon wafer fabrication lines, dramatically reducing cost and enabling mass-market deployment. The target applications are EV onboard chargers, EV inverters, and data centre power supplies.
GaN Systems (acquired by Infineon, ETR: IFX), Navitas Semiconductor (NASDAQ: NVTS), and Power Integrations (NASDAQ: POWI) are commercialising GaN-on-Si power ICs at scale. Infineon has positioned GaN as a core technology in its automotive and industrial power strategy. The EV transition is the single largest demand growth driver for gallium in this decade.
Data centre power conversion is a parallel growth vector: hyperscalers including Microsoft and Google have publicly cited GaN as a key technology for improving power supply efficiency in AI infrastructure build-outs.
6. Integrated Circuits — GaAs for High-Speed Logic
GaAs integrated circuits are used where silicon CMOS cannot meet speed or power requirements — specifically in analogue and mixed-signal ICs operating at microwave frequencies. Applications include satellite modems, point-to-point radio links, and test and measurement equipment.
The market is mature and well-established, with foundries such as WIN Semiconductors and MACOM Technology Solutions (NASDAQ: MTSI) servicing consistent demand. GaAs ICs have not been displaced by silicon at these frequencies and are unlikely to be within the current techno
What is gallium most commonly used for?
Gallium’s most commercially significant uses are in compound semiconductors — specifically gallium arsenide (GaAs) and gallium nitride (GaN). These materials underpin LEDs, laser diodes, 5G power amplifiers, and high-efficiency solar cells. GaN-on-silicon is a fast-growing segment for EV power electronics and data centre power supplies.
Why is gallium important for 5G technology?
GaN-on-silicon carbide (GaN-on-SiC) is the preferred material for 5G base station power amplifiers because it operates efficiently at high frequencies and high power densities — performance levels that silicon cannot match. All major 5G equipment vendors, including Ericsson and Nokia, use GaN in their radio units. The same material is used in defence radar and electronic warfare systems.
How have China’s gallium export controls affected supply?
China introduced export licensing requirements for gallium in August 2023, alongside germanium. Since China accounts for approximately 80% of global primary gallium production, the controls created immediate supply chain uncertainty for Western semiconductor and defence manufacturers. Prices rose sharply; buyers accelerated inventory building and procurement diversification. Western primary production capacity remains very limited, and no short-term substitute supply has emerged at scale.
What are gallium uses in the defence industry?
Defence applications for gallium are concentrated in GaN-on-SiC-based power amplifiers for active electronically scanned array (AESA) radars, electronic warfare systems, and military satellite communications. GaAs-based ICs are also used in radar signal processing and missile guidance systems. These applications are non-substitutable with silicon and are classified as critical to national security by US, EU, and NATO defence procurement agencies.
Is gallium used in electric vehicles?
Yes. GaN-on-silicon power semiconductors are increasingly used in EV onboard chargers and traction inverters, replacing silicon-based MOSFETs and IGBTs. GaN switches at higher frequencies, enabling smaller, lighter, and more efficient power conversion units. Companies including Infineon, Navitas Semiconductor (NASDAQ: NVTS), and GaN Systems (acquired by Infineon) are commercialising GaN power ICs specifically for automotive applications. This segment is one of the fastest-growing demand vectors for gallium.
