Interface engineering of highly efficient perovskite solar cells
Interface engineering of highly efficient perovskite solar cells
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DOI：
10.1126/science.1254050
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发表时间：
2014-08-01
期刊：
影响因子：
56.9
通讯作者：
Yang, Yang
中科院分区：
文献类型：
--
作者：
Zhou, Huanping;Chen, Qi;Yang, Yang
将钙钛矿太阳能电池技术推向其理论功率转换效率（PCE）需要对整个器件的载流子动力学进行精细控制。通过控制钙钛矿层的形成和仔细选择其他材料，我们抑制了吸收器中的载流子复合，促进了载流子注入载流子输运层，并在电极处保持了良好的载流子萃取。当通过反向偏置扫描测量时，电池的PCE平均提高到16.6%，在没有抗反射涂层的平面几何中，效率最高可达19.3%。我们的钙钛矿太阳能电池的制造是在空气和低温溶液中进行的，这将简化大面积钙钛矿设备的制造，这些设备价格低廉，性能优异。
Advancing perovskite solar cell technologies toward their theoretical power conversion efficiency (PCE) requires delicate control over the carrier dynamics throughout the entire device. By controlling the formation of the perovskite layer and careful choices of other materials, we suppressed carrier recombination in the absorber, facilitated carrier injection into the carrier transport layers, and maintained good carrier extraction at the electrodes. When measured via reverse bias scan, cell PCE is typically boosted to 16.6% on average, with the highest efficiency of similar to 19.3% in a planar geometry without antireflective coating. The fabrication of our perovskite solar cells was conducted in air and from solution at low temperatures, which should simplify manufacturing of large-area perovskite devices that are inexpensive and perform at high levels.