Gaseous sublimation furnaceGaseous sublimation furnace
Release time: 2025-09-05 16:52:50 Number of views: 72
Gas sublimation furnace is a term in the field of materials science, chemistry or physicochemical. It describes the process of a substance (usually a solid) directly changing into a gaseous state without passing through a liquid, and this process occurs in a gaseous environment (such as a specific atmosphere, vacuum or carrier gas) or is closely related to the behavior of the gaseous phase.
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Equipment characteristics:
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Equipment name |
Gaseous sublimation furnace |
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Power supply |
AC 220V |
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Rated power |
1.2KW |
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control accuracy |
±1℃ |
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Heating element, heating element |
伴热带 |
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Tmax |
400℃ |
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Volume of feed tank |
2L |
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Four-way mass flow controller |
Way air mixing tank: Propylene 500SCCM;
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control system |
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1. Sintering process curve setting: the setting curve is displayed dynamically, multiple process curves can be pre-stored for equipment sintering, and each process curve can be set freely; 2. Sintering can be reserved to realize unattended sintering process curve sintering;
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Temperature accuracy |
+/- 1℃ |
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Net weight |
Approximately 72KG |
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Precautions for equipment use |
1. When the equipment hearth temperature is ≥ 300 ℃, do not open the hearth to avoid injury;
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Service support |
One year limited warranty with lifetime support (Consumable parts, such as processing tubes and O-rings, are not covered by this warranty. Please order replacement parts from the relevant products below.) |
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This is the most classic and widely used application of gas-phase sublimation furnaces, used to increase the purity of materials to 6N (99.9999%) or even 7N (99.99999%) levels.
Semiconductor materials:
Silicon (Si) and germanium (Ge): Deep purification through regional melting sublimation method is a key step in the preparation of high-purity monocrystalline silicon (used in integrated circuits and solar cells).
Compound semiconductor: Purification of elements such as Ga, As, P, In, Sb or their compounds (such as GaAs powder) for the preparation of high-performance III-V semiconductor materials.
Optoelectronics and Display Materials:
Organic light-emitting materials (OLED): Purification of small molecule organic semiconductor materials (such as Alq ∝, NPB, TPD, etc.) to remove impurities and improve the luminous efficiency, lifespan, and stability of the device.
Organic photovoltaic materials: Purification of donor/acceptor materials for organic solar cells.
Fluorescent powder/phosphor: Purification of rare earth doped fluorescent powder raw materials to improve luminescence purity and brightness.
Nuclear industry materials:
Nuclear fuel and target materials: compounds for purifying uranium and plutonium or materials for neutron sources (such as Po and Ra compounds, which need to be strictly protected), removing neutron toxins and impurities, and improving nuclear performance.
Specialty Chemicals and Elements:
Iodine (I ₂), sulfur (S): Purified high-purity iodine is used in the pharmaceutical and electronic industries; Purification of high-purity sulfur for scientific research or special synthesis.
Arsenic (As), selenium (Se), tellurium (Te): purified for use in semiconductors, photovoltaics (such as CdTe), and alloy additives.
Arsenic trioxide (As ₂ O3): Preparation of high-purity reagents for pharmaceutical or scientific purposes.
High purity metal:
Purification of certain easily sublimated metals or their halides, such as the purification of mercury (Hg) (although in a unique form, the principle is similar).
2、 Crystal and Thin Film Growth
By utilizing the directional condensation properties of sublimation substances on specific substrates or cold regions, single crystals can be grown or thin films can be prepared.
Single crystal growth:
Sublimation of high-purity raw materials at the hot end, condensation and epitaxial growth of steam at the cold end where seed crystals are placed, forming large-sized and high-quality single crystals. Suitable for materials that are difficult to grow using traditional melt methods.
Physical Vapor Deposition (PVD):
As a special PVD technique (sometimes referred to as sublimation condensation method), the source material is sublimated in a high temperature zone, and steam condenses on a substrate at a lower temperature to form a film.
Application: Preparation of organic semiconductor thin films (for OLED, OTFT), certain inorganic thin films (such as chalcogenide thin films), especially suitable for materials that are sensitive to heat or not easily evaporated.
Powder form control:
By controlling the condensation conditions (temperature, atmosphere), ultrafine and high-purity powders with specific morphologies (such as flakes, needles) and particle size distributions can be obtained, which are used in fields such as catalysts and pharmaceuticals.
3、 Materials Research and Analysis
Phase transition behavior research: Study the sublimation characteristics and phase diagrams of substances under high temperature and low pressure.
Impurity behavior research: Observing the separation behavior of different impurities during the sublimation process, providing a basis for optimizing the purification process.
Small batch sample preparation: providing high-purity experimental samples for laboratory research.
Summary:
The application field of gas-phase sublimation furnace is highly concentrated in the refining and preparation of high-end materials:
The core is purification: in the fields of semiconductor, optoelectronic display, and nuclear industry, it is a "purifier" for obtaining ultra-high purity raw materials.
The characteristic is growth: in the fields of organic electronics and special crystals, it is an effective method for single crystal and thin film growth.
The foundation is research: providing a key experimental platform for fundamental research in materials science.
Its application value lies in its ability to handle substances that are unstable, easily decomposed, or difficult to purify through traditional methods such as distillation and recrystallization in the liquid phase. It is an indispensable "behind the scenes hero" device in modern high-tech industries.
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