Aryl quaternary ammonium modulation for perovskite solar cells with improved efficiency and stability

Hou, Minna; Yang, Xiaoming; Han, Meidouxue; Ren, Huizhi; Li, Yuelong; Huang, Qian; Ding, Yi; Zhao, Ying; Zhang, Xiaodan; Hou, Guofu

doi:10.1016/j.nanoen.2022.106922

Cited by 25 publications

(13 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Notably, the I 3d orbit shifts to lower bonding energies after passivating with SN, at 618.71 eV and 630.14 eV, respectively, which could be ascribed to the formation of chemical bonding between I − vacancies and undercoordinated Pb 2+ . In addition, the spectra of N, O, S and full peaks are displayed in Figure S1 [26,27] . In order to further elucidate the reaction between SN and perovskite films, Fourier transform infrared (FTIR) spectroscopy was performed as shown in Figure S2.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional Molecule Assists Passivate Method to Simultaneously Improve the Efficiency and Stability of Perovskite Solar Cells

et al. 2023

View full text Add to dashboard Cite

The power conversion efficiency (PCE) of perovskite solar cells (PSCs) has been greatly improved recently. However, in organic–inorganic polycrystalline perovskite films many defects inevitably exist, which limits the PCE and stability of PSCs. Herein, a small organic molecule 2‐chlorothiazole‐4‐carboxylic acid (SN) is spin coated on a perovskite film to enhance the performance of PSCs. We find that the multifunctional molecule SN reacts with under‐coordinated Pb2+ ions and I− vacancies because of the presence of the sulfur and nitrogen donor atoms, and the −COOH groups, which are conducive to suppressing charge recombination and passivating defects. Even more, the introduction of the SN layer can effectively adjust the energy level alignment, which is conducive to the separation and extraction of charge carriers in PSCs. Therefore, devices with SN modification show a champion PCE of 22.55 %. Besides, PSCs with SN show impressive stability, retaining 96 % of its initial PCE after storage in ambient air for 500 h.

show abstract

Section: Resultsmentioning

confidence: 99%

Multifunctional Molecule Assists Passivate Method to Simultaneously Improve the Efficiency and Stability of Perovskite Solar Cells

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In 2022, a new organic ammonium salt, namely N , N , N -trimethyl phenylmethyl ammonium iodide (TMPMAI), was successfully designed and applied at the perovskite/HTL interface. 138 This strategy not only passivated interfacial defects (mainly targeting Pb 2+ as a deep defect in the perovskite) via interaction of the introduced benzene ring with the perovskite but also created a gradient energy distribution at the interfaces, thus effectively suppressing non-radiative recombination (Fig. 13f).…”

Section: Interfacial Engineering In the Normal Structurementioning

confidence: 99%

Recent advances in the interfacial engineering of organic–inorganic hybrid perovskite solar cells: a materials perspective

Guo

Chen

et al. 2022

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

“…Apart from porphyrin, many more organic dyes are also employed for HTL materials owing to their interesting optical properties and aggregation tunability, such as anthanthrone 304 and quinacridone 305 . For the perovskite/HTL interface, examples of organic molecules that have better chances to improve the device performance include those bearing ammonium and alkyl/phenyl groups, 306 provided that these molecules are compatible with the halide perovskite substrate 307,308 . The energy level arrangement of the perovskite/molecule/ETL and perovskite/molecule/HTL interface is critical for the device performance, because it dictates the energy loss and charge transfer kinetics at the interface 309‐314 …”

Section: Molecular Engineer Interfacesmentioning

confidence: 99%

Molecular design for perovskite solar cells

Zhang

2022

Intl J of Energy Research

View full text Add to dashboard Cite

The molecular approach is an effective way to improve the optoelectronic performance and stability of perovskite solar cells. In this manuscript, we review the progress and design principles of the molecular compounds for perovskite solar cells. The molecular design strategies that consider the A-site cations, additive molecules, solvent molecules, and surface adsorbates are explained, followed by a discussion on the molecular design at different perovskite-related interfaces, including the perovskite/perovskite interface, the electron transporting layer/perovskite interface, and the hole transporting layer/perovskite interface. Subsequently, the molecular impacts on the charge transfer directions at the perovskite surface and the molecular engineering on the molecular-scale halide perovskites are elucidated. The machine learning methods are emphasized to globally optimize the molecular layers for the perovskite solar cells from the complicated multidimensional virtual design space. Last but not least, the molecular design protocols are summarized and the suggestions for the future research directions on the molecular design for the halide perovskite materials are provided. This manuscript highlights the effectiveness of the molecular design strategies to improve the optoelectronic performance and stabilities of the perovskite solar cells.

show abstract

Aryl quaternary ammonium modulation for perovskite solar cells with improved efficiency and stability

Cited by 25 publications

References 59 publications

Multifunctional Molecule Assists Passivate Method to Simultaneously Improve the Efficiency and Stability of Perovskite Solar Cells

Multifunctional Molecule Assists Passivate Method to Simultaneously Improve the Efficiency and Stability of Perovskite Solar Cells

Recent advances in the interfacial engineering of organic–inorganic hybrid perovskite solar cells: a materials perspective

Molecular design for perovskite solar cells

Contact Info

Product

Resources

About