Solar panels are made up of smaller units called solar cells.

太阳能板由更小的单位构成， 称为太阳能电池。

There's an issue with one of the lunar Lander's solar cells.

月球着陆器的其中一个太阳能电池存在问题。

Typically, silicon solar cells are between 16 and 18 percent efficient.

一般而言，硅太阳能电池的效能在16%至18%之间。

The advantage of the perovskite solar cell is that it can be lightweight and flexible.

用钙钛矿制成的太阳能电池，其优势在于：质量很轻，灵活度高。

More important are photovoltaic solar cells, a rival technology that converts sunlight directly to electricity.

更重要的是光电太阳能电池，它是一种关键的技术能直接将太阳光转化成电力。

Meanwhile, solar cells are getting better, cheaper, and are competing with electricity from the grid.

与此同时，太阳能电池正 变得越来越高效，经济，而且正和输电网进行竞争。

Researchers tacked flexible solar cells to it, so it can charge on the go.

电池上附有软太阳能电池，可以边走边充电。

But cheap carbon-based solar cells could cover large surfaces - compensating for their low efficiency.

不过廉价的碳太阳能电池能覆盖更大的面积，这就弥补了低效率这个缺点。

When they reach the edge, they hit tiny solar cells that convert them into electricity.

因为这种太阳能板捕捉了某些阳光。

It takes about seven tons of this material to make 1 million watts of solar cells.

7吨这样的材料大约能制造可储存100万瓦特的太阳能电池。