钨舟的更换和安装Replacement and installation of tungsten boat

打开仓门后，我们先检查一下电子传输层与阴极修饰层材料是否足够，这两者通常已经放在仓里的蒸发源位置了，不需要每次更换，只需要定时添加就OK了。

After opening the door, we first check whether the materials of the electron transport layer and cathode modification layer are sufficient. These two materials are usually placed in the evaporation source position in the bin, and do not need to be replaced every time. We only need to add them regularly.

接着我们要更换钨舟。钨舟是用来装铝粒的。主编一米八几的个子，每次换舟都要猫着腰，双腿岔开，重心降低，脸贴在手套箱上，把手伸进蒸镀仓里，费力地把旧钨舟从导电的固定桩上卸下来，把新钨舟换上去。

Then we're going to replace the tungsten boat. Tungsten boats are used to hold aluminum particles. The chief editor is about 1.8 meters in height. Every time he changes a boat, he has to wear his back, his legs are split, his center of gravity is lowered, his face is stuck on the glove box, his hand is put into the steaming and plating bin, and the old tungsten boat is removed from the conductive fixed pile, and the new tungsten boat is replaced.

钨舟的两端不能接触到两端的挡板，因为钨舟是要通电的，钨舟接触到金属挡板会导致蒸镀台电流过大损坏。

The two ends of the tungsten boat can not contact the baffles at both ends, because the tungsten boat is to be electrified. If the tungsten boat contacts the metal baffle, it will cause excessive current damage of the evaporation and plating platform.

一切准备完毕后，我们把片子正面向下放进仓里，关紧仓门。对于新手来说，如果你要制备5个钙钛矿发光二极管，那么请至少准备7个片子，因为把片子放进仓里的槽中时，搬砖的手微微颤抖，镊子一松，指不定片子就掉了。接着把仓内抽成真空状态。

When everything is ready, we put the film face down into the warehouse and close the door. For beginners, if you want to prepare five perovskite light-emitting diodes, please prepare at least seven pieces, because when you put the chips into the slot in the bin, the hand carrying the bricks trembles slightly, and the tweezers loosen, and the pieces will fall off. Then the warehouse is vacuumed.

蒸镀对仓内真空度要求极高。机械泵可以把仓内压力抽成10的-1次方pa，之后用分子泵继续对蒸镀仓抽真空，分子泵可以把仓内压力抽成10的-4次方pa。抽好后，我们就开始电子传输层的蒸镀。

The vacuum degree in the chamber is very high. The mechanical pump can pump the pressure in the chamber into 10-1 power PA, and then continue to vacuum the evaporation and plating chamber with molecular pump, and the molecular pump can pump the pressure in the chamber to 10-4 power PA. After pumping, we begin to evaporate the electron transport layer.

抽真空其实是很简单的操作，毕竟是机械泵和分子泵在抽，不是主编用嘴吸，所以为了节省篇幅，就不展开叙述了。总之，仓内抽到2*10的-4次方pa时，蒸镀就可以开始了。

Vacuumizing is actually a very simple operation. After all, it is the mechanical pump and molecular pump pumping, not the editor in chief sucking with his mouth. Therefore, in order to save space, I will not expand the description. In short, the evaporation can start when 2 * 10 - 4th power PA is drawn from the bin.

铝层蒸好后，需要让蒸镀台冷却一下。在冷却的时间里，需要重复上一期推文中的洗片子步骤。

After the aluminum layer is steamed, it is necessary to let the steaming table cool down. During the cooling down period, you need to repeat the steps in the last tweet.

等蒸镀台彻底冷却后，我们就开仓取片子。此时取出的片子已经是钙钛矿发光二极管的成品了，可以加电压来驱动它发光。因为蒸镀了好多层，所以在施加电压的时候，需要用刀片把ITO上方的膜层刮一刮，让ITO裸露，再用正电极夹住ITO，负电极夹住铝电极，施加电压，发光二极管就可以开始工作啦

After the steaming table has cooled down completely, we will open the warehouse to take the film. At this time, the chip is already the finished product of perovskite light-emitting diode, which can be driven by voltage. Because many layers are evaporated and plated, when applying voltage, it is necessary to scrape the film above ITO with a blade to expose ITO, and then clamp ITO with positive electrode and aluminum electrode with negative electrode. After applying voltage, LED can start to work