the hole transporting layer (HTL). The photovoltaic performance of the inverted PSCs based on these small molecular HTMs with the device architecture of glass/ITO/HTL/CH3NH3PbI3/C60/BCP/Ag was tested. Only SFX-TPAM had its highest occupied molecular orbital (HOMO) level matched with the valence band of CH3NH3PbI3. The inverted PSC based on a dopant-free SFX-TPAM HTL achieves a power conversion efficiency
带有螺[
芴-9,9'-吨](SFX)(SFX-
TPAM和SFX-
TPA)或螺[
芴-9,9'-
噻吨x](SFT)的四种杂环螺型空穴传输材料(HTM)单元(SFT-
TPAM和SFT-
TPA)通过
钙钛矿型太阳能电池(PSC)应用的低成本,高产量的简便途径合成。在吸收方面,这四种处于薄膜状态的化合物在波长大于430 nm时都是透明的,这有利于使可见光到达
钙钛矿活性层而不会被空穴传输层(HTL)吸收。基于这些小分子HTM的反向PSC的光伏性能以及
玻璃/ ITO / HTL / CH 3 NH 3 PbI 3 / C 60的器件架构/
BCP / Ag已测试。只有SFX-
TPAM具有与CH 3 NH 3 PbI 3的价带相匹配的最高占据分子轨道(HOMO)。基于无掺杂剂SFX-
TPAM HTL的倒置PSC在标准的一种阳光照明下实现了10.23%的功率转换效率,这比基于无掺杂剂spiro-OMeTAD的电池的转换效率高(8