《科学报告》比较两种空穴传输层：MeO-2PACz器件效率显著高于PTAA、界面非辐射复合更低，11月12日刊出
《科学报告》2026年11月12日刊出一项研究，比较两种常用空穴传输层在倒置钙钛矿太阳能电池中的表现，试图解释为何自组装单分子层往往优于传统共轭聚合物。研究把聚合物PTAA与自组装单分子层MeO-2PACz分别用于以FA0.9Cs0.1PbI3为吸收层的器件。论文数字对象标识为10.1038/s41598-026-78516-z，2026年7月8日收稿、10月27日接受、11月12日刊出。
期刊摘要报告，采用MeO-2PACz的器件取得了显著高于PTAA器件的功率转换效率，主要来自更高的填充因子与开路电压。稳态与时间分辨光致发光测量显示，MeO-2PACz与钙钛矿的界面上空穴提取更高效，非辐射复合更低。
摘要还报告，在MeO-2PACz界面，与复合和离子相关的弛豫特征更弱，过渡到复合主导状态的偏压更高，这与界面缺陷钝化与离子极化减弱一致。作者据此认为，钙钛矿与自组装单分子层的界面在缺陷钝化方面比钙钛矿与PTAA的界面优化得更好。
（来源：《科学报告》）
Scientific Reports Compares Two Hole Transport Layers: MeO-2PACz Devices Substantially Outperform PTAA With Less Non-Radiative Recombination, Published November 12
A study published in Scientific Reports on November 12, 2026, compared two widely used hole transport layers in inverted perovskite solar cells, seeking to clarify why self-assembled monolayers often outperform conventional conjugated polymers. The researchers compared the polymer PTAA with the self-assembled monolayer MeO-2PACz in devices with an FA0.9Cs0.1PbI3 absorber. The paper carries digital object identifier 10.1038/s41598-026-78516-z, was received on July 8, 2026, accepted on October 27, 2026, and published on November 12, 2026. The journal abstract reported that devices based on MeO-2PACz achieved a substantially higher power conversion efficiency than their PTAA counterparts, mainly through a higher fill factor and open-circuit voltage. Steady-state and time-resolved photoluminescence indicated more efficient hole extraction and reduced non-radiative recombination at the MeO-2PACz and perovskite interface. The abstract further reported that at the MeO-2PACz interface, the recombination- and ion-related relaxation features were weaker and the transition to the recombination-dominated regime occurred at higher bias, consistent with interfacial defect passivation and reduced ionic polarization. The authors concluded that the perovskite and self-assembled monolayer interface is better optimized for defect passivation than the perovskite and PTAA interface. The journal abstract did not report exact efficiency figures, and this item does not supply figures from other sources.
(Source: Scientific)
来源：《科学报告》
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图片来源：图：一块钙钛矿太阳能电池样品。Dennis Schroeder / National Renewable Energy Laboratory，公共领域，经 Wikimedia Commons。 / Photo: Dennis Schroeder / National Renewable Energy Laboratory, public domain, via Wikimedia Commons.
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