DEEP RESEARCH · UNITEST/PEROVSKITE SOLAR CELLS

UniTest Perovskite Solar Cell Business Analysis

A review of how semiconductor equipment DNA is being extended into solar-cell mass production and the 2035 market opportunity

Date: 2026-02-08 · Technology commercialization, value-chain, and market outlook analysis · Naver Blog

0. Bottom line first

The source says UniTest received U.S. NREL certification for 14.8% efficiency on a large-area sub-module in 2019 and, with the Korea Research Institute of Chemical Technology, exceeded 20% efficiency on areas larger than 200cm². Since late 2024, it has begun producing indoor solar cells for ESL and IoT devices at the Pyeongtaek pilot line, while building a KRW 121.3 billion large-scale manufacturing facility in the Saemangeum National Industrial Complex.

1. Company DNA evolution: from semiconductor to energy

Official fact: Since its founding in 2000, UniTest has built technology in memory semiconductor back-end test equipment, especially burn-in testers and memory component testers. The core processes for perovskite solar cells, including thin-film coating, laser patterning, and deposition, are technically similar to semiconductor and display processes.

Interpretation: The important point is that UniTest is not merely a solar-cell manufacturer; it is an equipment-based manufacturer with internal production-equipment technology. That structure can support process black-boxing, yield control, and cost competitiveness.

2. Perovskite advantages and UniTest milestones

Perovskite is a material with an ABX₃ crystal structure and is presented as a next-generation material that can overcome limits of conventional silicon solar cells.

Official fact: Through joint research with KRICT, UniTest achieved more than 20% efficiency on large-area sub-modules above 200cm². In November 2019, it also received U.S. NREL certification for 14.8% efficiency on a perovskite mini-module.

• Large-area coating: The team secured process technology to coat perovskite solution uniformly on a large substrate.
• Laser patterning: Precision laser scribing minimizes dead zones between cells and increases effective module area.
• Low-light optimization: Device structure was optimized to generate power under weak indoor lighting, supporting ESL and IoT product competitiveness.

3. Value chain and partnerships

The perovskite industry value chain is not yet fully established. In this early market, UniTest is building a vertically integrated model across materials, equipment, cell/module manufacturing, and EPC/construction.

Interpretation: Cooperation with KEPCO is especially important. Combining KEPCO's prior small-area glass-window technology, around 2.5cm x 2.5cm, with UniTest's scale-up technology could connect to energy-independent smart-building projects.

4. 2025-2035 market size and target markets

The source expects the perovskite market to pass through an opening phase in 2025-2026 and enter a full growth phase after 2030. The common point across market forecasts is a CAGR above 30%.

• Initial growth phase, 2025-2026: Research Nester forecasts the 2025 market at USD 342.14 million, while Business Research Insights forecasts USD 1.21 billion in 2026. IoT, consumer-electronics power sources, and small BIPV validation projects are expected to lead this phase.
• Growth acceleration, 2030-2035: Research Nester projects USD 66.58 billion in 2035, Astute Analytica USD 24.19 billion, IDTechEx USD 12.0 billion, and Future Market Insights a conservative USD 3.2 billion.

BIPV is UniTest's core target. As zero-energy building mandates spread, demand for buildings that generate their own electricity should rise, and perovskite is well suited to windows and exterior walls because transparency and color can be controlled. VIPV integrates solar cells into EV roofs or hoods, where flexible perovskite's curved-surface advantage matters. ESL and IoT are smaller markets, but useful for early cash flow and mass-production learning.

5. Production sites and mass-production roadmap

Official fact: The Pyeongtaek plant began operating pilot and mass-production equipment for perovskite solar cells in 4Q24. It mainly focuses on small ESL and IoT modules and process/yield stabilization.

Official fact: The Saemangeum plant is being built on a 66,000㎡, about 20,000-pyeong site in Lot 1 of the Saemangeum National Industrial Complex, with total investment of KRW 121.3 billion. Investment began sequentially in late 2024, with full-scale operation targeted around 2026.

Interpretation: Saemangeum is both the production base for large-area BIPV modules and infrastructure that can later expand into tandem cells. It is the key event for confirming whether UniTest moves beyond R&D into manufacturing.

6. Risks and checkpoints

7. Final take

UniTest is accelerating an identity shift from semiconductor equipment company to perovskite solar leader as of 2025. The evidence is more than 10 years of R&D, partnerships with KRICT and KEPCO, and investment in the Saemangeum production line.

The KPIs I would watch are visibility of 2025 IoT product revenue, Pyeongtaek yield stabilization, Saemangeum operation in 2026, and long-term BIPV reliability data. If successful, UniTest could become not only a growth story as an individual company, but also a first-mover case for Korea's next-generation solar market.