PEROVSKITE
34.22%
Perovskite tandem cell technology based on N-type TOPCon achieves a conversion efficiency of 34.22%.
Third-party certification of laminated cell
Voc exceeding 2.01 V
Theoretical efficiency limit is
45-46%.
Tandem Perovskite Solar Cells:
Tandem perovskite solar cells are a high-efficiency photovoltaic technology that stacks semiconductor materials with different bandgap widths to more fully utilize the solar spectrum:cite[1]. Such cells typically consist of a wide-bandgap top cell and a narrow-bandgap bottom cell, connected by a tunnel recombination junction.
Perovskite VS Topcon
Perovskite
Comparison Dimensions
Topcon
↑ Ultra-high
(single junction 31%, tandem >43%)
Theoretical efficiency limit
↑ High
(theoretical limit of monocrystalline silicon is 29.4%)
~16-18% (module)
(laboratory >26%)
Current mass production efficiency
~24-26% (modules)
(Highly mature technology)
↓ Extremely low potential
(solution process + low-temperature processing, minimal material usage)
Manufacturing cost
↑ Higher
(High-temperature process + high-purity silicon material, significant equipment investment)
↓ Simple
(coating/printing process, 5-10 steps)
Process complexity
↑ Complex
(High-temperature diffusion/deposition, 15+ process steps)
⚠️ Early stage
(pilot line operation, stability to be verified)
Industrialization maturity
✅ Mature
(Global mass production, dominant in the mainstream market)
❌ Significant challenges
(Sensitive to water and oxygen, ion migration, photothermal degradation)
Long-term stability
✅ Excellent
(25-year warranty, complete empirical data)
⚠️ Lead risk
(Requires recycling control, lead-free R&D in progress)
Environmental friendliness
✅ Green
(silicon material is non-toxic, mature recycling system)
✅ Super strong
(Flexible, translucent, colorful)
Application flexibility
❌ Limited
(mainly rigid modules)
⭐ Disruptive
(Stacked cells, low-cost innovation)
Technological potential
📈 Progressive
(efficiency approaching theoretical limit)
Business Scope
Performance testing and grading
Measure the photoelectric conversion efficiency, IV curve, and EL imaging to detect defects, and classify them according to power.
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Encapsulation
Use high-barrier materials (such as POE film + glass/back sheet) for lamination and encapsulation to strictly isolate water and oxygen.
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Back electrode deposition
Vapor deposit or sputter metal electrodes (such as Ag, Au).
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Laser patterning (key to series connection)
Use laser etching to divide the entire cell into P1, P2, and P3 lines and connect them in series to form sub-cells.
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Hole transport layer deposition
Coating or depositing hole transport materials (e.g., Spiro-OMeTAD, PTAA).
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Perovskite layer deposition (core)
Large-area coating of perovskite precursor solutions (spin coating,blade coating, slot coating, etc.), with precise crystallization control (solvent engineering, annealing).
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Electron transport layer deposition
Coat or deposit electron transport materials (e.g., SnO₂, TiO₂).
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Transparent electrode deposition
Prepare a transparent conductive layer (e.g., sputtered ITO) on the substrate.
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Substrate cleaning and treatment
Clean transparent conductive glass (ITO/FTO) or flexible substrates and perform surface activation treatment (e.g., UV-O₃).
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Contact us
Address: 5 Xingfu Road, Miaoshan Development Zone, Jiangxia District, Wuhan City, Hubei Province, China
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