2016
DOI: 10.1039/c6nr04741f
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2D/3D perovskite hybrids as moisture-tolerant and efficient light absorbers for solar cells

Abstract: The lifetime and power conversion efficiency are the key issues for the commercialization of perovskite solar cells (PSCs). In this paper, the development of 2D/3D perovskite hybrids (CAPbI/MAPbICl) was firstly demonstrated to be a reliable method to combine their advantages, and provided a new concept for achieving both stable and efficient PSCs through the hybridization of perovskites. 2D/3D perovskite hybrids afforded significantly-improved moisture stability of films and devices without encapsulation in a … Show more

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Cited by 230 publications
(194 citation statements)
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“…[10] Related research [6] have shown that the small 2D crystallites formed on top of 3D MAPbI 3 layer. [11,12] The subgap quantum efficiency (QE) spectra further support the structural similarity between pristine and target perovskites (Figure 2f). In this regard, further structural analysis was performed by X-ray diffraction (XRD) analysis.…”
supporting
confidence: 53%
See 1 more Smart Citation
“…[10] Related research [6] have shown that the small 2D crystallites formed on top of 3D MAPbI 3 layer. [11,12] The subgap quantum efficiency (QE) spectra further support the structural similarity between pristine and target perovskites (Figure 2f). In this regard, further structural analysis was performed by X-ray diffraction (XRD) analysis.…”
supporting
confidence: 53%
“…In this regard, further structural analysis was performed by X-ray diffraction (XRD) analysis. [11] Previous experimental results indicate that the former type of complex formation depends on the electron-donating power of heteroatom ligands. The major diffraction peaks appeared near 14°, 24°, 28°, and 32° (2θ), which corresponds to the (110), (202), (220), and (310) lattice planes, respectively.…”
mentioning
confidence: 99%
“…The PEA + ions act to tighten FAPbI 3 , passivate the surface defects which subsequently enhance the phase and moisture stability. [125] Ma et al demonstrated a 2D/3D multidimensional hybrid perovskite of CA 2 PbI 4 /MAPbI x Cl 3−x with astonishing humidity resistance via a two-step process with an optical bandgap of 1.59 eV and such high stability that no degradation occurred even after 40 d. [126] In this work, they covered the 3D perovskite with an in situ 2D perovskite; the thin upper layer of the 2D perovskite sharply increased the moisture tolerance by limiting water diffusion and increasing surface hydrophobicity (Figure 8). In addition, Yuan et al have reported that after partly substituting the CH 3 NH 3 + cation with a large ionic radius C 8 H 9 NH 3 (PEA), the hybrid 2D/3D perovskite PEA 2 (CH 3 NH 3 ) n−1 Pb n I 3n+1 exhibits a record high PLQY.…”
Section: D/3d Multidimensional Perovskitementioning
confidence: 99%
“…(PEA) 2 (MA) n −1 Pb n I 3 n +1 , (BA) 2 (MA) n –1 Pb n I 3 n +1 , and other 2D layer‐structured OIHPs have been intensively investigated and applied to photovoltaic fields with promising PCEs 8, 107, 108, 109, 110, 111, 112, 113, 114. A p‐type (C 6 H 9 C 2 H 4 NH 3 ) 2 PbI 4 perovskite was studied to reveal the photophysics behind this van der Waals structure, and the Wannier–Mott excitons were suggested to strongly contribute to the I light despite their greater binding energy ( E b ) at room temperature 115.…”
Section: Oihps‐based Pdsmentioning
confidence: 99%