Quantum well two-dimensional materials have excellent properties. Quantum well lasers are an important downstream market.

Quantum well (QW) is a potential well on a microscopic scale that is comparable to the de Broglie wavelength of electrons. It is a potential well of electrons or holes formed by two different semiconductor materials arranged alternately and with obvious quantum confinement effect. . Quantum well is a two-dimensional material. In the early days of the development of quantum mechanics, the concept of quantum well was proposed. Research on related technologies and applications continues to be in-depth. Quantum well laser is a representative application field of quantum well.

Limited by the quantum well width and well walls, in a quantum well, carriers can only move freely in a two-dimensional plane parallel to the well wall and cannot move in the vertical direction. Compared with three-dimensional materials, there are great differences in electronic states, phonon states, element excitations, interactions, etc. in quantum wells. According to the “2021-2025 Quantum Well Industry In-depth Market Research and Investment Strategy Suggestions Report” released by the Industrial Research Center, affected by the above Affected by factors, when applied in the field of semiconductor materials, quantum wells will exhibit unique electrical and optical properties, and the characteristics of quantum wells can be controlled by changing material components, doping components, material structure, thin layer thickness, etc.

Semiconductor lasers are small in size, highly reliable, have the characteristics of modulating current, outputting high-speed laser, and are compatible with integrated circuits. They are an important laser type. It is expected that the global semiconductor laser market will grow to 9.6% from 2020 to 2025. The average annual compound growth rate is around %. Quantum well laser is a type of semiconductor laser. Quantum wells are generally used in the active area of ​​laser diodes. The narrow-bandgap active area is sandwiched between or alternately overlapped with wide-bandgap semiconductor materials. When carriers are confined in the active area When inside the layer, a quantum well is formed.

According to the “2021-2025 Quantum Well Laser Industry In-depth Market Research and Investment Strategy Suggestions Report” released by the Industrial Research Center, quantum Trap lasers have the characteristics of small frequency, low threshold current, narrow spectral line width, high output power, fast modulation speed, and wide temperature adaptability range. They are one of the mainstream products in semiconductor lasers. Quantum well lasers mainly include quantum line lasers and quantum dot lasers. In comparison, due to the unique properties of quantum dots, quantum dot lasers have more advantages in terms of threshold current, temperature adaptability, gain effect, etc., and their future application prospects are broader.

Quantum well lasers are widely used in laser processing, laser medical treatment, inspection and testing, environmental protection and other fields, and have great research and development value. In 2019, a team from the Institute of Semiconductors of the Chinese Academy of Sciences broke through core processes such as etching and passivation and developed a new antimonide semiconductor quantum well laser. Its single tube and bar components achieved room temperature continuous output powers of 1.62 watts and 16 watts respectively. The comprehensive performance reaches the international first-class level.

Industry analysts said that quantum well is a two-dimensional material. When the performance development of traditional semiconductor materials is close to the physical limit, The development and application of two-dimensional materials with unique properties have attracted attention, and the quantum well market space is growing rapidly. At this stage, semiconductor lasers are the main application market for quantum wells. The concept of quantum wells was proposed with the development of quantum mechanics. There is also broad room for development in the field of quantum mechanics in the future. From this point of view, the future development prospects of the quantum well industry are good.