Siltectra

Siltectra GmbH, a company rooted in advanced materials science, was established to commercialize a groundbreaking wafer-thinning technology. Founded in Dresden, Germany, in 2010 by Dr. Jan Richter, Dr. Eicke R. Weber, and Dr. Hubert J. Kolker, the firm's core intellectual property stems from research initially conducted at Harvard University. Dr. Richter, serving as the managing director, brought his deep technical expertise to the forefront of the company's operations. The company's journey culminated in a significant milestone when it was acquired by the semiconductor giant Infineon Technologies in November 2018 for a sum of 124 million euros, a move that integrated Siltectra's specialized capabilities into a larger, established industry player.

The firm's primary offering is the "Cold Split" technology, a patented process designed for the kerf-free wafering and thinning of brittle materials. This technique allows for the splitting of crystalline materials with minimal loss of material, a stark contrast to traditional sawing methods that turn a significant portion of the valuable material into dust. The process involves a controlled thermal and mechanical treatment that introduces stress into the material, allowing it to be cleaved precisely along a desired plane. This method not only conserves expensive raw materials but also streamlines the manufacturing process.

Siltectra's business model revolves around licensing its Cold Split technology and providing specialized equipment to manufacturers within the semiconductor industry. The technology is particularly impactful for producing thin wafers for power semiconductors, especially those made from silicon carbide (SiC). By splitting a single SiC wafer into two, the number of chips produced can be nearly doubled from one wafer, directly addressing the growing demand for SiC-based power solutions in sectors like automotive, particularly for electric vehicle inverters. The key benefit for clients is a substantial reduction in manufacturing costs and a significant increase in output, enabling a more efficient and scalable production of next-generation semiconductor devices.

Keywords: wafer thinning, Cold Split, silicon carbide, semiconductor manufacturing, kerf-free wafering, power electronics, material science, Infineon, cleaving technology, PV industry