STEM与日常科技·英语30篇（5）

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钙钛矿太阳能电池为何实验室效率高，但实测稳定性不足？

Perovskite cells reach over twenty-six percent efficiency in labs—nearly matching silicon—but degrade rapidly under heat and moisture.
Their crystal lattice breaks down when exposed to UV light or oxygen, releasing volatile organic components over weeks.
Encapsulation helps, yet microscopic pinholes in barrier films let in enough humidity to trigger ion migration inside the layer.
Unlike silicon panels tested for twenty-five years, perovskites lack standardized field aging protocols for commercial certification.
Manufacturers stack perovskite on silicon in tandem cells to boost output, but interlayer stress accelerates delamination outdoors.
Accelerated stress tests simulate years of desert sun in days, revealing efficiency drops of fifteen percent after 1,000 hours.
Researchers add cesium or rubidium ions to stabilize the lattice, yet batch-to-batch consistency remains hard at scale.
Grid-scale pilot farms in Germany and Japan monitor performance decay monthly to refine encapsulation chemistry.
Cost advantages exist—perovskites use solution processing like inkjet printing—but durability must match price to displace silicon.
Until encapsulation and interfacial engineering mature, perovskites remain promising in labs, not rooftops.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Until encapsulation and interfacial engineering mature, perovskites remain promising in labs, not rooftops. 在封装与界面工程成熟前，钙钛矿仍止步于实验室，尚未登上屋顶商用。
Grid-scale pilot farms in Germany and Japan monitor performance decay monthly to refine encapsulation chemistry. 德国和日本的大型示范电站每月监测性能衰减，以优化封装材料化学体系。
Unlike silicon panels tested for twenty-five years, perovskites lack standardized field aging protocols for commercial certification. 与经25年实证测试的硅基组件不同，钙钛矿尚无统一的户外老化评估标准以获商业认证。

这篇中文题目最接近哪一句？钙钛矿太阳能电池为何实验室效率高，但实测稳定性不足？一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？钙钛矿电池在实验室中效率超过26%，已接近硅电池，但在高温高湿环境下衰减迅速。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） Why Perovskite Solar Cells Show Lab Gains But Lag in Real-World Stability Tests How to cook noodles A maths worksheet

Until encapsulation and interfacial engineering mature, perovskites remain promising in labs, not rooftops.

Until encapsulation and interfacial engineering mature, perovskites remain promising in labs, not rooftops.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Until encapsulation and interfacial engineering mature, perovskites remain promising in labs, not rooftops.