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Dibenzo[b,d]thiophene‐Cored Hole‐Transport Material with Passivation Effect Enabling the High‐Efficiency Planar p–i–n Perovskite Solar Cells with 83% Fill Factor
Solar RRL ( IF 6.0 ) Pub Date : 2019-11-08 , DOI: 10.1002/solr.201900421 Jing Zhang 1 , Quan Sun 1 , Qiaoyun Chen 2 , Yikai Wang 1 , Yi Zhou 2 , Bo Song 2 , Xuguang Jia 1 , Yuanyuan Zhu 1 , Shuai Zhang 1 , Ningyi Yuan 1 , Jianning Ding 1 , Yongfang Li 2, 3
Solar RRL ( IF 6.0 ) Pub Date : 2019-11-08 , DOI: 10.1002/solr.201900421 Jing Zhang 1 , Quan Sun 1 , Qiaoyun Chen 2 , Yikai Wang 1 , Yi Zhou 2 , Bo Song 2 , Xuguang Jia 1 , Yuanyuan Zhu 1 , Shuai Zhang 1 , Ningyi Yuan 1 , Jianning Ding 1 , Yongfang Li 2, 3
Affiliation
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N2,N2,N8,N8‐tetrakis(4‐(methylthio)phenyl)dibenzo[b,d]thiophene‐2,8‐diamine (DBTMT) is synthesized from three commercial monomers for application as a promising dopant‐free hole‐transport material (HTM) in perovskite solar cells (pero‐SCs). The intrinsic properties (optical properties and electronic energy levels) of DBTMT are investigated, proving that DBTMT is a suitable HTM for the planar p–i–n pero‐SCs. The champion power conversion efficiency (PCE) of the optimized pero‐SCs (with structure as ITO/pristine DBTMT/MAPbI3/C60/BCP/Ag) reaches 21.12% with a fill factor (FF) of 83.25%, which is among the highest PCEs and FFs reported for planar p–i–n pero‐SCs based on dopant‐free HTMs. The Fourier‐transform infrared spectroscopy, X‐ray diffraction, and X‐ray photoelectron spectroscopy spectra of MAPbI3 and DBTMT–MAPbI3 films demonstrate that there is an interaction between DBTMT and MAPbI3 at the interface through the sulfur atoms in DBTMT to passivate the defects, which is corresponding to the higher FF and PCE of the corresponding device.
中文翻译：
具有钝化作用的二苯并[b，d]噻吩类空穴传输材料，可实现填充比为83％的高效平面p–i–n钙钛矿太阳能电池
N 2，N 2，N 8，N 8-四（4-（甲硫基）苯基）二苯并[ b，d ]噻吩-2,8-二胺（DBTMT）由三种商业单体合成而成，可作为有前途的掺杂剂应用-钙钛矿太阳能电池（pero-SCs）中的自由空穴传输材料（HTM）。研究了DBTMT的内在性质（光学性质和电子能级），证明DBTMT是适用于平面p–i–n pero-SCs的HTM。优化的pero-SC（结构为ITO /原始DBTMT / MAPbI 3 / C 60）的卓越功率转换效率（PCE）/ BCP / Ag）达到21.12％，填充因子（FF）为83.25％，这是基于无掺杂HTM的平面p–n–peroSC报道的最高PCE和FF之一。MAPbI 3和DBTMT–MAPbI 3膜的傅立叶变换红外光谱，X射线衍射和X射线光电子能谱表明，DBTMT和MAPbI 3之间的相互作用通过DBTMT中的硫原子钝化而在界面处发生。缺陷，其对应于相应器件的较高FF和PCE。
更新日期：2019-11-08
中文翻译：
具有钝化作用的二苯并[b，d]噻吩类空穴传输材料，可实现填充比为83％的高效平面p–i–n钙钛矿太阳能电池
N 2，N 2，N 8，N 8-四（4-（甲硫基）苯基）二苯并[ b，d ]噻吩-2,8-二胺（DBTMT）由三种商业单体合成而成，可作为有前途的掺杂剂应用-钙钛矿太阳能电池（pero-SCs）中的自由空穴传输材料（HTM）。研究了DBTMT的内在性质（光学性质和电子能级），证明DBTMT是适用于平面p–i–n pero-SCs的HTM。优化的pero-SC（结构为ITO /原始DBTMT / MAPbI 3 / C 60）的卓越功率转换效率（PCE）/ BCP / Ag）达到21.12％，填充因子（FF）为83.25％，这是基于无掺杂HTM的平面p–n–peroSC报道的最高PCE和FF之一。MAPbI 3和DBTMT–MAPbI 3膜的傅立叶变换红外光谱，X射线衍射和X射线光电子能谱表明，DBTMT和MAPbI 3之间的相互作用通过DBTMT中的硫原子钝化而在界面处发生。缺陷，其对应于相应器件的较高FF和PCE。
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