A perovskite line is a chain of short, overlapping hand-offs. Coating, drying, laser patterning, lamination and handling pass the same substrate along within minutes, and the next module starts before the previous one is finished. That is why the interface conversation cannot wait for the equipment drawings. Every process step has a size limit, a speed limit and an environment limit, and each of those shows up in an interface first.
Before you send a request for quotation, collect substrate and film data, the target pace, the utilities available at the installation site, and the acceptance rules your team will apply. The following checklist follows the order in which those interfaces actually meet on a perovskite production line equipment build.
1. Substrate and film format
Start with the physical numbers, because they set the frame size, the transport pitch and the position of every downstream station. Write down:
- substrate size and thickness, including the tolerance you can actually hold on incoming glass or flexible carrier;
- cover or frame size and thickness, if your design uses one;
- the finished composite size after lamination, which is usually larger than the substrate itself;
- coating thickness range and the layer sequence you intend to run.
For reference, the specification table on our perovskite production line equipment page lists a 108.5 mm × 108.5 mm substrate at 450–850 μm, a 121.5 mm × 121.5 mm composite film at 20–127 μm, and a 125 mm × 125 mm frame at 0.8 mm. Those figures describe that particular machine configuration, not a universal limit, but they show exactly what a supplier needs in writing before sizing transport, alignment and lamination stations.
2. Coating window and the coating method you choose
The coating step decides more than film quality. It decides line speed, oven length, and whether the rest of the line works on individual pieces or on a moving web. A slit coating equipment configuration on our site, for example, lists a coating width of 50–350 mm, a coating thickness of 5–200 μm and a line speed setting of 1–10 m/min. Multiply speed by width and you can see how much drying capacity the interface behind the coater has to absorb.
R&D work runs on a different scale. A glove box spin coating equipment build handles silicon wafers up to and including 4 inches at 300–8,500 rpm, with a spin-coating uniformity of ±3%. If your roadmap moves from that bench setup to a pilot line, the interface question is not simply "can you make it bigger". It is how the recipe, the solvent handling and the atmosphere control transfer across, and which parts of the bench setup carry over into the production cell.
3. Atmosphere, environment and handling between stations
Perovskite layers are sensitive to water and oxygen, so the transfer between two machines is often where the real engineering sits. Specify what the material may be exposed to, for how long, and who moves it. Then check what the room can deliver: temperature range, humidity control, cleanroom class, and the space available for interlocks, load ports and operator access.
On the glove-box configuration above, the box is 304 stainless steel with a stated overall leakage rate under 0.05 vol%/h, an internal atmosphere held above +15 mbar and below −15 mbar, and a water probe covering 0–500 ppm. The glove box spin coating equipment also gives a usage environment of 15–30 °C and a 220 V / 50 Hz supply. Record the same categories for your site — enclosure material, target pressure band, monitoring instruments, and the ambient envelope your building can keep — and the supplier can tell you whether an interface needs a sealed transfer, a buffer station, or a small local enclosure.
4. Pace, capacity and the tolerance for loss
Every vendor will quote a throughput number. The useful conversation is about how that number is reached and what happens when it is not. Ask for the takt time per station, the loading time, and the assumptions behind the stated capacity. On the line configuration above, the specification table states a capacity of 800 pcs/h with a cycle of 4.5 s or less, a loading time under 4.5 s, a fragmentation rate below 0.01%, and a mean time between failures of 360 h or more.
Turn those into your own acceptance thresholds. If your yield budget cannot absorb more than a stated fraction of broken pieces, say so in the specification, because it changes gripper design, transport speed and the inspection stations you need. If your shift pattern runs the equipment unattended for part of the day, the interface list grows to alarms, stop logic and data recording.
5. Data, safety and control interfaces
A controller that only drives the machine is not an interface. Decide in advance what your quality and maintenance teams need out of the equipment: which process values are logged, at what rate, and in what file format; who can change a recipe and how that change is recorded; how fault codes are presented; and whether the line needs a three-colour warning light, an e-stop chain, or a hard interlock to upstream and downstream devices.
The control and safety items on our product pages are concrete examples of what to ask about: a touch screen with a PLC as the operating interface, a three-colour warning light for fault prompting, and stated pass-rate figures on the equipment pages. Write down your own equivalents — log retention period, report format, alarm response expectations, and the safety signals the line must exchange with the rest of the factory — and put them in the specification rather than leaving them for commissioning.
6. Utilities and the space around the machine
Power, gas, exhaust, drains and floor space are interfaces too, and they are the ones most often discovered late. For each station, list the supply voltage and frequency, the electrical load, the gases and purge atmospheres with their purity targets, the exhaust or venting a coating or drying step requires, and the footprint including door swing, maintenance clearance and operator reach. The machine dimensions published on our product pages — a coater footprint of 2,540 mm × 800 mm × 1,650 mm with a 1 m oven section, or a glove-box unit at 1,950 mm × 780 mm × 900 mm — are starting points for a layout sketch, not a substitute for your building survey.
7. Commissioning and acceptance
Before signing the order, agree on how the line will be judged. Fix the test material, the number of runs, the sampling plan for film thickness and uniformity, the pass criteria for each station, and the criteria for the whole line. Name the person on each side who signs off, and separate the factory acceptance test from the on-site one so that a problem found at the supplier's workshop does not become a shutdown at your plant.
Putting the interface list together
A short document is enough if it covers the seven areas above: substrate and film format; coating method and window; atmosphere and transfer; pace and loss tolerance; control, data and safety signals; utilities and space; and the acceptance rules. Send that with your enquiry and the technical exchange starts from real numbers instead of general questions about cell size.
If your project spans several process steps, or if the line has to be built around a building you already have, tell us the format, the pace and the constraints. Our engineering team works from thin-film solar equipment for coating, lamination and laser processing, and from customized non-standard automation solutions that tie individual stations into one line, so the interface list can be reviewed against a full layout rather than one machine at a time.
Send us your substrate dimensions, target capacity and site constraints, and we will map them to the coating, lamination and handling stations your line needs.
