The spin-ladder iron chalcogenides AFeX（A=K,Cs and Ba,X=S and Se）are built of double chainsof edge-sharing FeX tetrahedra with the spacer A cationsseparating the *** with the layered iron-based superconductors,these...
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The spin-ladder iron chalcogenides AFeX（A=K,Cs and Ba,X=S and Se）are built of double chainsof edge-sharing FeX tetrahedra with the spacer A cationsseparating the *** with the layered iron-based superconductors,these materials are all insulators with decreased bandwidth from the reduced ***,these quasi-one dimensional
结合有机薄膜晶体管第三端可以形成强电场且低功耗的特点,设计制备具有三端结构的有机聚合物太阳能电池,在器件内实现了可调制的电场,通过电场提高载流子传输,增加激子解离率,提高了电池的能量转换效率。实验中通过第三端对PTB7:PCBM聚合物太阳能电池施加电压,当偏压为2.0V时,器件短路电流达到17.9 m A/cm,能量转换效率提高了19%,达到8.1%。通过激子解离率、载流子迁移率的计算,讨论了电场对活性层中激子的产生、解离以及载流子传输的作用。同时,对于这一新型器件结构在实际应用中的可行性也进行了讨论。
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