Perovskite Quantum Dots Supplier - Alfa Chemistry

Size Control


PbSe quantum dots have a wider range of size control, covering visible light to near infrared, so PbSe quantum dots have huge application potential in the field of infrared optoelectronic devices. Due to the strong quantum confinement effect of PbSe quantum dots, a series of unique size correlations are derived, and the research on the size control of PbSe quantum dots has always been the primary task of synthetic chemistry. Alfa Chemistry is a professional quantum dot service platform that can adjust the size of quantum dots based on existing quantum dot technology and cutting-edge preparation methods.

Size Control

Growth mechanism of quantum dots

The growth process of quantum dots includes two important stages: nucleation and growth. When the monomer concentration reaches the nucleation threshold, it will quickly nucleate in a very short time. During the nucleation process, a large amount of monomer will be consumed and the monomer concentration will drop sharply. At this time, if you can’t continue to add monomer to maintain a under high supersaturation conditions, the nucleated quantum dots will enter the growth process, and this process will follow the Ostwald ripening effect.


The absorption peak of PbSe quantum dots is adjustable in the range of 717~2110 nm, the size is more controllable, and it can be prepared in large quantities. Specific services are as follows:

  • Mass Preparation
  • Growth Mechanism Analysis
  • Testing Service

In the size control service, quantum dots can be prepared in large quantities after meeting customer requirements. The quality of all samples can be guaranteed.

Advantages of our services

  • Advanced laboratory equipment
  • Professional team and advanced laboratory equipment ensure the successful preparation of the product.

  • Reliable
  • The researchers have many years of experience to ensure the standardization of experimental operations and procedures.

  • Short time, high efficiency
  • We provide our customers with the most comprehensive service at an efficient speed.

  • Safety
  • All experiments were conducted under a confidentiality agreement, with emphasis on customer privacy.

Quality assurance

Establish quality system procedures for overall quality management from product realization planning, raw material control, process control, product release, after-sales service, etc., and continue to update the quality management system.

Quality control

Advanced analysis equipment, professional analysts, and perfect operation SOP provide guarantee for the quality of Alfa chemistry products.

Testing equipment

  • Fluorescence spectrometer
  • X-ray powder diffractometer (XRD)
  • Scanning electron microscope (SEM)
  • Transmission electron microscope (TEM)

Why choose us?

Our service tenet is that everything starts with the needs of customers. Alfa Chemistry Chemistry has the most professional technology and methods to adjust the size of PbSe quantum dots to meet the actual needs of customers.

Standard service process

  • Send us an email and Make requirements for required dimensions
  • Make plans and experiment
  • Quality control of samples testing
  • Test report and product plan are mailed back to customer

Alfa Chemistry provides you with a full range of services, from email sending, list your requirements, to delivery scheme, so that you can get the most professional, the most suitable service.

Our customer service representatives are enthusiastic and trustworthy 24 hours a day, Monday to Friday. If you are interested in our services, please contact us.

* It should be noted that our service is only used for research, not for clinical use.


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