Chinese semiconductor thread II

tokenanalyst

Brigadier
Registered Member

China Micro's(AMEC) revenue in 2023 will be approximately 6.264 billion yuan, and the new order amount will be approximately 8.36 billion yuan​

China Microwave Corporation released its 2023 annual report stating that the company’s operating income in 2023 will be approximately 6.264 billion yuan, an increase of approximately 1.524 billion yuan compared with 2022, and a year-on-year increase of approximately 32.15%. Among them, the sales of etching equipment in 2023 will be approximately 4.703 billion yuan, a year-on-year increase of approximately 49.43%; the sales of MOCVD equipment will be approximately 462 million yuan, a year-on-year decrease of approximately 33.95%. The company's average annual operating income growth rate over ten years from 2012 to 2023 is more than 35%.
The company's new orders in 2023 will be approximately 8.36 billion yuan, an increase of approximately 2.04 billion yuan from the 6.32 billion yuan in new orders in 2022, and a year-on-year increase of approximately 32.3%. Among them, new orders for etching equipment are approximately 6.95 billion yuan, a year-on-year increase of approximately 60.1%; as AMEC’s MOCVD equipment already occupies the absolute leading market share in blue and green LED production lines, affected by terminal market fluctuations, MOCVD equipment in 2023 Orders fell by approximately 72.2% year-on-year.
The net profit attributable to the owners of the parent company in 2023 is approximately 1.786 billion yuan, an increase of 52.67% compared with the same period last year. This is mainly due to the fact that revenue growth and gross profit will maintain a relatively high level in 2023, and the company's net profit attributable to the parent company after deducting non-profit items will be higher than the same period last year. An increase of approximately 272 million yuan. Non-recurring gains and losses in 2023 will be approximately 594 million yuan, an increase of approximately 344 million yuan from 250 million yuan in the same period last year. The change in non-recurring gains and losses was mainly due to the company selling part of its shares in Tuojing Technology Co., Ltd. in 2023, resulting in an after-tax net income of approximately 406 million yuan.
The net profit attributable to the owners of the parent company after deducting non-recurring gains and losses in 2023 is approximately 1.191 billion yuan, an increase of 29.58% over the same period last year, mainly due to: operating income in 2023 is approximately 6.264 billion yuan, an increase of approximately 1.524 billion yuan over 2022. , a year-on-year increase of approximately 32.15%; the gross profit in 2023 will be approximately 2.870 billion yuan, an increase of approximately 702 million yuan compared with 2022, and a year-on-year increase of approximately 32.40%.
During the reporting period, China Microelectronics Corporation was mainly engaged in the research, development, production and sales of high-end semiconductor equipment and pan-semiconductor equipment. The company aims at the forefront of the world's science and technology. Based on the professional technology accumulated over many years in the semiconductor equipment manufacturing industry, the company is involved in the fields of semiconductor integrated circuit manufacturing, advanced packaging, LED epitaxial wafer production, power devices, MEMS manufacturing and other high-end equipment fields of micro-processing.
The company's plasma etching equipment has been used in international first-line customers from 65 nanometers to 14 nanometers, 7 nanometers and 5 nanometers and other advanced integrated circuit processing and manufacturing production lines and advanced packaging production lines. The company's MOCVD equipment has been put into large-scale mass production on the production lines of leading customers in the industry, and the company has become the world's top gallium nitride-based LED equipment manufacturer.

Please, Log in or Register to view URLs content!
 

measuredingabens

Junior Member
Registered Member
Please, Log in or Register to view URLs content!

Low Contact Resistance Organic Single-Crystal Transistors with Band-Like Transport Based on 2,6-Bis-Phenylethynyl-Anthracene

Abstract

Contact resistance has become one of the main bottlenecks that hinder further improvement of mobility and integration density of organic field-effect transistors (OFETs). Much progress has been made in reducing contact resistance by modifying the electrode/semiconductor interface and decreasing the crystal thickness, however, the development of new organic semiconductor materials with low contact resistance still faces many challenges. Here, 2,6-bis-phenylethynyl-anthracene (BPEA) is found, which is a material that combines high mobility with low contact resistance. Single-crystal BEPA OFETs with a thickness of ≈20 nm demonstrated high mobility of 4.52 cm2 V−1 s−1, contact resistance as low as 335 Ω cm, and band-like charge transport behavior. The calculated compatibility of the EHOMO of BPEA with the work function of the Au electrode, and the decreased |EHOMO-ΦAu| with the increase of external electric field intensity from source to gate both contributed to the efficient charge injection and small contact resistance. More intriguingly, p-type BPEA as a buffer layer can effectively reduce the contact resistance, improve the mobility, and meanwhile inhibit the double-slope electrical behavior of p-channel 2,6-diphenyl anthracene (DPA) single-crystal OFETs.
 

measuredingabens

Junior Member
Registered Member
Please, Log in or Register to view URLs content!

Please, Log in or Register to view URLs content!

Researchers achieve low-energy synthesis of bulk van der Waals materials​


Researchers have synthesized bulk van der Waals (vdW) materials at near-room temperature (ranging from room temperature to 60°C), significantly reducing the energy consumption required for their fabrication by at least one order of magnitude.

Bulk vdW materials are an important focus of research because they are held together by weak vdW forces instead of strong covalent or metallic bonds. The
Please, Log in or Register to view URLs content!
is published in Nature Materials.

Previously, bulk vdW materials, such as graphite and
Please, Log in or Register to view URLs content!
, could only be synthesized at very high temperatures (>1,000°C). In this study, instead of directly sintering graphite or boron nitride particulates at such high temperatures, the particulates were exfoliated into two-dimensional (2D) nanosheets with very low energy consumption. Subsequently, a molding process at 45°C (or even at
Please, Log in or Register to view URLs content!
) was employed to transform these nanosheets into mechanically robust bulk vdW materials.

The method applies to a wide range of 2D materials, including MXene and transition metal dichalcogenides. Its low fabrication temperature also allows for surface imprinting and in-situ shaping, which are challenging with high-temperature sintering due to thermal-induced shrinkage and expansion. Additionally, the additive-free vdW materials facilitate high-temperature applications where 2D material-based polymeric composites fail.


This result mainly stems from the vdW interaction, providing the manufactured bulk materials with high mechanical strength. Activating the vdW interaction doesn't require high temperatures but rather nanometer or sub-nanometer contact between adjacent nanosheets. The thinness and flexibility of the 2D nanosheets make them easily movable and deformable, facilitating intimate contact formation.

In addition, the researchers found that water adsorbed on the nanosheets is a powerful "sintering aid" that lubricates the nanosheets to give good alignment. The confined water then desorbs from the nanosheets and escapes from the material due to the nano-confinement effect, which closes the capillary, thus activating the vdW interaction and resulting in a densified, strong bulk vdW material.

"This process simplifies fabrication and reduces the high
Please, Log in or Register to view URLs content!
associated with bulk vdW materials production, offering scalability, and it could also introduce innovative approaches to vdW material design, such as hybridizing various 2D materials, particularly those unstable at high processing temperatures," said Prof. Su Yang, a researcher at the Shenzhen International Graduate School of Tsinghua University (SIAT) and corresponding author of the article.

"This study suggests the revolution to traditional material processing methods through nanomaterial utilization," said Prof. Cheng Huiming from SIAT.

The team includes researchers from SIAT of the Chinese Academy of Sciences (CAS), the Shenzhen International Graduate School of Tsinghua University, the Institute of Metal Research of CAS, and the University of Science and Technology of China of CAS.
 
Top