基于给体-受体型 S,N-杂环富勒烯的空穴传输材料在高效钙钛矿太阳能电池中的应用。
Donor-Acceptor-Type S,N-Heteroacene-Based Hole-Transporting Materials for Efficient Perovskite Solar Cells.
机构信息
Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL) , Station 6, CH-1015 Lausanne, Switzerland.
Institute of Organic Chemistry II and Advanced Materials, University of Ulm , Albert-Einstein-Allee 11, 89081 Ulm, Germany.
出版信息
ACS Appl Mater Interfaces. 2017 Dec 27;9(51):44423-44428. doi: 10.1021/acsami.7b10039. Epub 2017 Dec 18.
Two new donor-acceptor (D-A)-substituted S,N-heteroacene-based molecules were developed and investigated as hole-transporting material (HTM) for perovskite solar cells (PSCs). Optical and electrochemical characterization brought out that the energy levels of both HTMs are suitable for their use in PSCs. Consequently, a power-conversion efficiency of 17.7% and 16.1% was achieved from PSCs involving the HTM-1 and HTM-2, respectively. The optoelectronic properties in terms of series resistance, conductivity, and charge carrier recombination were further examined to unfold the potential of these new HTMs. Time-resolved photoluminescence spectroscopy brought out that the hole injection from the valence band of perovskite into HTMs follows the trend, which is in accordance with the position of the highest occupied molecular orbital. Overall, our findings underline the potential of S,N-heteroacene co-oligomers as promising HTM candidates for PSCs.
开发并研究了两种新型供体-受体（D-A）取代的 S,N-杂 heteroacene 基分子，作为钙钛矿太阳能电池（PSC）的空穴传输材料（HTM）。光学和电化学特性表明，两种 HTM 的能级都适合用于 PSCs。因此，基于 HTM-1 和 HTM-2 的 PSC 分别实现了 17.7%和 16.1%的功率转换效率。进一步研究了光电性能方面的串联电阻、电导率和载流子复合，以揭示这些新型 HTM 的潜力。时间分辨光致发光光谱表明，空穴从钙钛矿价带注入 HTM 遵循以下趋势，这与最高占据分子轨道的位置一致。总的来说，我们的研究结果强调了 S,N-杂 heteroacene 共低聚物作为 PSC 有前途的 HTM 候选物的潜力。
Zotero 插件