Low-GWP Etching Gases: Semiconductor Carbon Neutrality Reshapes Global Wafer Procurement Rules

Key Highlights

In late 2025, at a flagship global semiconductor industry exhibition, a new class of low-GWP etching gases, developed as alternatives to high-GWP fluorinated chemistries including HFC-23 (CHF₃) used for chamber cleaning and conventional etching chemistries, made its public debut, instantly triggering a chain reaction across the entire industry value chain. This achievement represents not only a pivotal breakthrough in green manufacturing for critical semiconductor consumables but also signals a fundamental restructuring of industry standards centered on low-GWP etching gases—a shift rapidly taking hold within global wafer procurement systems.
From the phased implementation of global carbon border adjustment mechanisms to the enactment of semiconductor industry emissions-reduction legislation by major economies, low-GWP etching gases have evolved beyond mere environmental technology options; they have become a core competitive factor determining market access for key players in the global semiconductor industry.

I. The Historical Burden of High-GWP Gases: Shared Pressure on the Global Semiconductor Industry to Reduce Emissions

For decades, the etching and chamber cleaning stages of global semiconductor manufacturing have relied heavily on perfluorocarbon (PFC) gases. These gases typically possess Global Warming Potential (GWP) values ​​in the thousands; notably, certain PFCs—exemplified by CF₄—have atmospheric lifetimes exceeding 50,000 years, with a single molecule exerting a greenhouse effect thousands of times greater than that of carbon dioxide. While their chemical stability and compatibility with established processes have made them essential consumables for manufacturing technologies ranging from 14nm nodes to 3D NAND, they have also placed a heavy emissions burden on the semiconductor industry amidst the global drive toward carbon neutrality.

Industry Data Reference:
According to reports from SEMI (Semiconductor Equipment and Materials International), a single 12-inch wafer fab utilizing advanced process nodes generates notable annual PFC greenhouse gas emissions in carbon-equivalent terms.

Since 2023, global emissions reduction policies have continued to tighten, and three mandatory, cross-regional constraints have emerged:

1. Major global economies are expanding the scope of Carbon Border Adjustment Mechanisms; semiconductor manufacturing, critical materials, and end-use chips are increasingly subject to carbon footprint accounting and disclosure requirements, mandating that imported wafer products account for their full lifecycle greenhouse gas (GHG) footprint.
2. Key semiconductor industry hubs are successively introducing low-carbon manufacturing regulations, industry-wide emission reduction directives, and supporting incentive policies, while introducing carbon-related levies and emission restrictions for operators relying on high-GWP etching gases.
3. Leading global semiconductor support policies explicitly designate “low-emission manufacturing capabilities” as a prerequisite for obtaining financial support.

Under the overarching global goal of achieving carbon neutrality by 2050, the scope for using traditional high-GWP etching gases is rapidly shrinking. The procurement mindset of the past—which prioritized etching precision while disregarding gas emissions—is increasingly misaligned with emerging global industry standards; a supply chain transformation, driven from the level of fundamental consumables, has long since become imperative.

II. Technological Breakthroughs in Low-GWP Gases: The Global Race from Laboratory to Mass Production Line

To replace traditional high-GWP gases, the global semiconductor industry has been engaged in intensive technological development for over a decade; a new generation of etching gases—characterized by GWP values below 1, delivering drastically reduced greenhouse warming impact compared with traditional PFCs and HFCs—is rapidly transitioning from the laboratory to large-scale production lines.

The most representative technological breakthroughs on a global scale have already established three clear pathways for practical implementation:

The corresponding cryogenic etching technology is emerging as a key enabler for the effective use of low-GWP gases. By precisely maintaining the substrate temperature between -70°C and -150°C, this process facilitates the formation of a stable passivation layer on the wafer surface; this not only suppresses lateral etching—enabling the fabrication of high-aspect-ratio structures with near-zero deviation—but also further reduces gas consumption.
Third-generation cryogenic etching systems from leading equipment suppliers are seeing expanding commercial deployment, with numerous process chambers deployed for production-line testing and mass production; meanwhile, next-generation cryogenic etching equipment has entered the production-line testing phase at multiple multinational chipmakers, paving the way for the large-scale use of low-GWP gases.

A global technological race is already underway: industrial players across different regions have established differentiated strengths in areas such as cryogenic etching equipment development, novel gas formula innovation, and scaling of production capacity. Together, they are driving the transition of low-GWP etching gases from an “optional technology” to an industry-wide “must-have.”

III. Fundamental Restructuring of Procurement Rules: A Global Shift from “Cost-First” to “Carbon Footprint-First”

The adoption of low-GWP etching gases is fundamentally rewriting the global wafer procurement rules that have been in place for decades. While the core logic of global wafer procurement previously centered on the three key elements of precision, cost, and lead time, “lifecycle carbon footprint” has become a mandatory evaluation criterion in tender specifications from many leading chipmakers.

Leading global chip manufacturers have fully upgraded their latest procurement standards to incorporate low-carbon criteria:

• Leading global consumer electronics and AI chip clients require comprehensive traceability reports regarding etching gas emissions for advanced wafers produced using sub-7nm process nodes.
• Major global memory chip manufacturers are updating their supplier guidelines for 2025, mandating partner wafer foundries to achieve substantial reductions in the usage of high-GWP etching gases by 2027.
• Leading wafer foundries are prioritizing the procurement of low-GWP gases over traditional high-GWP alternatives for their advanced process lines; they are opting for products that meet low-carbon standards, even if this entails a short-term increase in procurement costs.

This restructuring of industry rules has directly reshaped global trade flows for semiconductor consumables:
While core patents and production capacity for low-GWP etching gases were previously concentrated among a few regional players, the rapid expansion of production capacity across multiple regions is now diversifying the global supply landscape. Meanwhile, the widespread adoption of carbon labeling systems enables the precise tracking of the carbon footprint for every wafer; data spanning the entire lifecycle—from the production and transport of etching gases to their use on the manufacturing line—will serve as a key factor in wafer pricing. Consequently, products that fail to meet low-carbon standards will gradually lose access to mainstream global markets, even if they meet performance specifications.

A more profound impact lies in the restructuring of the division of labor across the industrial chain. In the past, wafer manufacturers in various regions could compete globally by leveraging cost advantages; today, however, carbon costs have emerged as a critical new variable. Production lines slow to adopt low-GWP gases may face rising carbon-related costs under emerging carbon border adjustment systems via full-product carbon footprint accounting, significantly undermining their products’ global competitiveness. Consequently, those who fully deploy low-GWP etching gases across production lines at an early stage will be better positioned to help shape future global semiconductor trade rules.

IV. Coordination and Competition in Global Industrial Chains: A New Industrial Balance under Carbon Neutrality

The regulatory shifts driven by low-GWP etching gases are propelling the global semiconductor supply chain toward a new dynamic of collaboration and competition.
On one hand, the low-carbon transition has become a shared goal across the industry, with stakeholders in various regions engaging in deep technical collaboration. SEMI (Semiconductor Equipment and Materials International) is spearheading industry alliances and standards development focused on low-GWP gases, bringing together leading global chip manufacturers, gas suppliers, and equipment companies to jointly establish process compatibility standards for these new gases. Meanwhile, top-tier global semiconductor R&D institutions have opened their joint R&D platforms for cryogenic etching and low-GWP gas technologies to the entire industry, significantly lowering the barriers to technology adoption.

Meanwhile, global industrial competition regarding technical standards, patent landscapes, and market shares for low-GWP gases continues to intensify. Leading players in the gas industry are attempting to secure pricing power through patent barriers, while some market participants aim to translate low-carbon technology advantages via carbon labeling frameworks into new competitive advantages across global supply chains. For regions that are latecomers to the semiconductor industry, this presents both a challenge and an opportunity: achieving technological breakthroughs in the field of low-GWP gases offers a genuine possibility of breaking the patent monopolies that characterized the era of traditional high-GWP gases and securing a more advantageous position within the global supply chain.

In the long run, the shift in procurement standards driven by low-GWP etching gases will ultimately steer the global semiconductor industry toward a more sustainable development model. As low-carbon practices evolve from marketing talking points into fundamental operational requirements embedded in every stage of wafer manufacturing, the industry’s technological trajectory will shift from a singular focus on performance enhancement to a new path that balances performance with environmental responsibility. This transformation, initiated by the adoption of low-GWP etching gases, will serve as a pivotal element in the global semiconductor industry’s pursuit of its 2050 carbon-neutrality goals and will reshape the underlying dynamics of global semiconductor trade for decades to come.

A reliable partner in the global low-carbon semiconductor supply chain.

Amid the global semiconductor industry’s shift toward low-carbon operations, the ability to provide a stable, one-stop supply of specialty gases has become a cornerstone for wafer fabs seeking to meet emissions reduction targets. With 15 years of deep expertise in the gas industry, Chengdu Xenon Tritium Technology Co., Ltd. maintains a comprehensive supply system covering the full range of semiconductor specialty gases. The company offers high-purity specialty gases—including low-GWP etching gases—tailored for advanced manufacturing processes, alongside end-to-end closed-loop gas recovery and reuse solutions that fully comply with IEC international standards and GB/T Chinese national standards. Supported by a professional global logistics team, the company ensures safe and rapid product delivery worldwide. It upholds rigorous quality control from the source to guarantee the purity and stability of every batch, providing full-lifecycle technical support and customized services to wafer manufacturers across the globe, thereby helping clients seamlessly adapt to new procurement standards driven by the industry’s carbon-neutrality goals.
To explore our complete portfolio of semiconductor specialty gases and low-carbon solutions, please visit the official website of Chengdu Xenon Tritium Technology and discover a one-stop gas service plan tailored to your production line’s needs.