http://warm-ir-factory.com/en/tags/bake/ Recent content in Bake on The Warm IR Heating Factory Hugo en-us Fri, 26 Jun 2026 01:43:45 +0800 http://warm-ir-factory.com/en/posts/post-exposure-bake-peb-heater/ Fri, 26 Jun 2026 01:43:45 +0800 http://warm-ir-factory.com/en/posts/post-exposure-bake-peb-heater/ <p><img src="http://warm-ir-factory.com/images/0ea7296bcdd661f341d1983d454c4037.png" alt="Post exposure bake (PEB) heater"></p> <p>On the fab floor, the post-exposure bake is where you win or lose critical dimension control. A half-degree drift across the wafer is enough to shove linewidth into the reject band, and you’re throwing away hours of exposure and etch work for nothing. That’s why our PEB heaters are built to keep the thermal budget tight, shift after shift. <strong>What matters under the hood</strong> We run short-wave infrared emitters with a quartz-halogen source profile, tuned so the energy dumps into the photoresist stack fast and clean. You get sub-millimeter thermal uniformity across the bake zone and wafer-level stability of ±0.1°C. Repeatability is baked into the control loop: closed-loop <a href="https://henruite.com">feedback</a>, high-resolution sensors, and a thermal mass that settles quickly without overshoot. It lives in Class 1–100 cleanrooms and adds zero particles during bake, so <a href="https://o-yate.net">defect</a> counts stay where they need to be—essentially zero. In lithography, PEB temperature is what sets chemical amplification and final linewidth. This heater hits the resist target fast, holds it steady, and cools predictably, so the process window stays consistent lot-to-lot. You get quicker bake cycles without giving up yield, lower energy use thanks to efficient infrared coupling, and fewer unplanned stops because the emitters and fixtures are built for 24/7 duty. The result is repeatable CD control and far fewer excursions that trace back to thermal drift. Here’s the part that bites if you don’t plan for it: installation has to match bake station geometry, tool interface, and exhaust routing. Retrofit kits are available, but alignment tolerances are tight—otherwise you’ll pay in uniformity. The unit performs best when chamber reflectivity and wafer emissivity stay stable. Swap coatings or change carriers and the thermal profile shifts, which means a quick recalibration. Kick off qualification with a multi-point thermal map to set the baseline. After that, the system will hold the line.</p>