How to Judge the Quality of MPCVD Diamond Growth Equipment

A high return on investment is the sole criterion for evaluating the quality of a company's equipment.

Currently, the main CVD diamond growth equipment on the market is 2450 Hz cylindrical reactor chamber and dish reactor chamber equipment, as well as 915 Hz. Cylindrical reactor chamber equipment mostly uses 6KW or 8KW microwave sources. Due to the physical limitations of cylindrical chambers, their production capacity is too low, and they are gradually being phased out in a market environment where lab-grown diamond prices are gradually decreasing.

915 Hz machines, due to their low efficiency and huge power consumption, have not yet become mainstream in the market and are still under development.

Disc reactor chamber MPCVD diamond machines are mainly available in 10KW, 12KW, and 15KW, differing in energy level and microwave plasma coverage area. Currently, 10KW and above dish reactor chamber MPCVD machines are the most profitable and common equipment in the market.

Taking Foshan High Light Intelligence Technology Co., Ltd.'s (hereinafter referred to as 'High Light') 10KW disc reactor chamber MP CVD equipment as an example, how can a high input-output ratio be obtained?

Input is divided into fixed assets and daily operation and maintenance costs. Fixed assets include the factory and its facilities, air and water systems, and constant temperature and humidity systems. High Light can provide customers with the best possible configuration of supporting facilities to maximize the effectiveness of the machines and systems while minimizing costs. Daily operation and maintenance typically includes electricity costs, personnel salaries, and other expenses.

Output is affected by the uniform growth area of the reactor chamber, yield rate, and production product planning.

How does MPCVD equipment achieve high output?

1. A plasma ball effect: It covers a wide area with uniform energy distribution. The temperature difference between the center and the periphery of the fireball is small.

2. A well-functioning water-cooling system within the chamber: When the cooling system is operating, the molybdenum wafers maintain a high degree of temperature uniformity.

3. System stability. Is the software system independently developed by the equipment manufacturer? How well is the software system matched with the equipment's hardware system? What is the duration of a single stable run?

To ensure the efficient operation of the above systems, High Light has actively engaged in research and development, and has obtained more than 20 patents to date. In particular, it has solved the problem of poor sealing of the disc reactor chamber, with 6 patents for the reactor chamber design alone.

（Patent & Certificate Links:https://www.highlight-it.com/Product/599160.html）

4. High compatibility between the machine and the formula ensures that diamond quality is controlled within the desired range. Taking jewelry-grade pure growth-colored DEF, VVS-VS clarity rough diamonds as an example, the yield rate has been increased from 70% to over 80%, with color precisely controlled within the DEF color range. The precision of the diamond growth formula can improve the yield rate and meet diverse customer needs. Examples include diamonds used for jewelry-grade lab-grown DEF color without color alteration, GHI diamonds used for color alteration, semiconductor-grade heat-dissipating diamond sheets, semiconductor-grade ultra-thin single-crystal wafers, optical-grade high-transmittance diamond windows, optical-grade ultra-thin CVD diamond wafers, and medical grade/ surgical grade cutting tools.

Besides the CVD diamond equipment itself, the application of supporting facilities such as laser cutting can also increase production capacity and reduce production costs. High Light collaborates with several laser cutting equipment companies to jointly develop technologies that reduce laser loss during cutting, shortening diamond growth time. After laser cutting, the surface roughness Ra reaches the hundred-nanometer level, allowing CVD diamond seed crystals to be directly placed into the reactor chamber for growth without surface polishing. Precision laser cutting can achieve ultra-thin sheets with a thickness of nearly 10 micrometers.

Furthermore, MPCVD equipment manufacturers also need to provide technical solutions for the supporting facilities of the diamond growth plant, such as water cooling systems, to ensure unified coordination of all facilities and achieve optimal production.

Engineer training is also included in the technical solutions. Engineers precisely control the diamond growth process, taking initiative and making adjustments promptly when problems arise, improving yield rates, and continuously learning and researching to improve formula performance and adapt to market changes and developments.

In summary, the efficient and low-cost growth of a batch of diamonds is not solely a matter of the diamond cultivation machine. The quality of a machine cannot be judged solely by whether its individual components are imported; suitability and matching are the optimal solution.