We offer the widest product range of low-flow (mass) flow meters and controllers on the market. Numerous styles of both standard and bespoke instruments can be offered for applications in laboratory, machinery, industry and hazardous areas.
Customer satisfaction, innovation and quality of product and service have been the cornerstones of Bronkhorst's success. Based on our experience, innovation and sense of responsibility, a relationship with Bronkhorst assures Performance for Life.
Learn more about how Coriolis-based flow meters can be used as microfluidic flow meter instead of thermal flow meters. Read the customer story of a microfluidics system builder who used Bronkhorst products.
Are you looking for technical documentation, are you interested to learn more about the measuring principles of Bronkhorst products, or you do want to get in contact with a Bronkhorst Service Engineer? This section will guide you to the relevant service & support topics.
Bronkhorst High-Tech BV the leaders in Mass Flow Meter / Mass Flow Controller technology for gases and liquids, Pressure Controllers and Evaporation Systems.
Bronkhorst mass flow controllers play an indispensable role in the manufacturing of LEDs by MOCVD. A stable and accurate flow control of hydrogen gas results in improved MOCVD process conditions and thereby in LED product quality.
Metal organic chemical vapour deposition (MOCVD) is one of the manufacturing steps in LED production. In MOCVD, a carrier gas guides one or more vaporous organometallic compounds to a wafer. There, these compounds decompose and deposit very thin crystalline layers on the wafer to make red, green, or blue emitting LEDs. The type of material deposited – generally some kind of nitride – determines the light colour to be emitted.
A large manufacturer of mini-LEDs for TV screens uses MOCVD with hydrogen as carrier gas. They requested the help of Bronkhorst Taiwan for a reliable and stable solution to supply this carrier gas.
The customer requested a more accurate flow control of hydrogen gas supply, to improve their MOCVD process and therewith the quality of the LEDs. Stable flow conditions and a fast response of the flow controller to changes in settings are required.
To improve the quality of the MOCVD process and therefore the LED quality, Bronkhorst Taiwan supplied multiple EL-FLOW Metal Sealed mass flow controllers to be used as standard devices inside the AIXTRON generation G3/G4 MOCVD equipment.
The aim of these flow controllers is to control the hydrogen carrier gas flow. A stable carrier gas flow is key to the quality of the entire process, as its flow rate determines the deposition rate of LED components.
The Bronkhorst mass flow controllers supply a lot of gas to fill the chambers of the MOCVD reactor equipment. Several different types are used: small EL-FLOW mass flow controllers with typical gas flow rates of 20 ml/min ranging to large ones with flow rates of 20 l/min.
The metal-to-metal seal construction with excellent resealing capability are unique features of the EL-FLOW Metal Sealed mass flow controllers. Moreover, they have a high-quality surface which makes them highly suitable for the stringent requirements in semiconductor and solar industries. In the current application, Bronkhorst EL-PRESS Metal Sealed pressure controllers are used as well.
Using these devices in the application results in a highly stable hydrogen gas flow rate with a fast response time to changes in process conditions. This improvement will lead to cost reductions as well as to reduction of stock items.
The Bronkhorst Taiwan service office is a full-service department. They perform calibrations as well as repairs to flow devices, even if they are 10 years old. Besides that, the service team visits the customers on-site for advice on how to use the flow devices and give tips on how to improve their process.
For this project the service team helped the customer to fine-tune the process by adjusting the PID setting of the mass flow devices, to get a better control performance in the MOCVD system. This level of service provision has not been matched by any competing suppliers.
Contact us if you have any questions & stay up to date with the latest developments in flow control by subscribing to our blog mailing list. You'll receive a blog every 2 weeks.
Bronkhorst High-Tech designs and manufactures innovative instruments and subsystems for low-flow measurement and control for use in laboratories, machinery and industry. Driven by a strong sense of sustainability and with many years of experience, we offer an extensive range of (mass) flow meters and controllers for gases and liquids, based on thermal, Coriolis and ultrasonic measuring principles. Our global sales and service network provides local support in more than 40 countries. Discover Bronkhorst®!