Self‐assembled hole transport monolayers (SAMs) have become indispensable components of high‐performance inverted perovskite solar cells (PSCs). SAMs not only govern the interfacial hole extraction kinetics but also influence the crystallization quality of the overlying perovskite film and the properties of the buried interface. In this work, we designed and synthesized a novel SAM featuring a terminal dibenzothiophene group, designated DBT‐4PACz. Our investigation reveals that, compared with the commercial benchmark Me‐4PACz, DBT‐4PACz forms denser and more uniform coverage on the substrate, exhibits higher conductivity, and demonstrates a more favorable energy level alignment with the perovskite. Moreover, the thiophene moiety in DBT‐4PACz enhances the interaction with the perovskite. This, combined with the denser SAM layer, improves the crystallization quality of the perovskite and reduces interfacial defects. Leveraging this molecular design, inverted PSCs employing DBT‐4PACz achieved a remarkable power conversion efficiency of 27.01% (certified 26.62%), significantly surpassing the performance of Me‐4PACz‐based control devices (26.16%). Furthermore, DBT‐4PACz‐based devices exhibit superior operational stability.
Self‐assembled monolayers (SAMs) have been extensively studied in perovskite solar cells (PSCs). Nevertheless, the aggregation tendency of SAM molecules results in non‐uniform deposition and inadequate substrate coverage, thereby severely impeding device performance. Herein, we introduce a multifunctional additive, n...
Zhong-Li Guo, Ying Meng, Fan Xu et al.· Advanced Functional Material...· 0 citations
The development of versatile, stable, and cost‐effective hole‐transport layers (HTLs) is essential for advancing next‐generation photovoltaic technologies. Herein, we report a series of phenothiazine‐based self‐assembled monolayers (SAMs) as HTLs for perovskite and organic solar cells. By systematically tuning the...
Qurrotun Ayuni Khoirun Nisa, Rahmatia Fitri Binti Nasrun, Dong Hwan Son et al.· Advanced Energy Materials· 0 citations
Wide‐bandgap (WBG, ≥1.68 eV) perovskite solar cells (PSCs) represent promising top‐cell candidates for monolithic perovskite tandem photovoltaics. However, fast crystallization kinetics of perovskite precursors and incomplete surface coverage of hole‐transporting self‐assembled monolayers (SAMs) commonly degrade pero...
Min Xu, Xuan-Ru Chen, Chang-Jie Yang et al.· Advanced Functional Material...· 0 citations
The molecular aggregation of self‐assembled molecules (SAMs) and their weak anchoring to the perovskite layer result in interfacial non‑radiative recombination and perovskite degradation, significantly impeding improvements in the efficiency and stability of perovskite solar cells (PSCs). Here, we design a novel
π...
Perovskite/silicon tandem solar cells (PSTSCs) are among the most promising photovoltaic technologies for surpassing the efficiency limits of single-junction solar cells. A major breakthrough in this field has been the introduction of ultrathin hole-selective self-assembled monolayers (HS-SAMs). These molecular interfa...
I. Hajimiri, Hashem Shahroosvand, S. Bellani et al.· Chemical Society Reviews· 0 citations
Self‐assembled monolayers (SAMs) are promising hole‐transporting interlayers for inverted perovskite solar cells (PSCs) owing to their ultrathin thickness and tunable work function. However, conventional SAMs such as Me‐4PACz tend to adopt lying‐down or tilted conformations on substrates, leading to disordered dipole o...
Xin-Yu Gu, Si-Yuan Zhu, Chun-Lei Su et al.· Advances in Materials· 0 citations
We use cookies to run the site and, with your consent, for analytics and to show ads.
See our Cookie Policy.
