Effect of Different CH3NH3PbI3 Morphologies on Photovoltaic Properties of Perovskite Solar Cells

Chen, Lung-Chien; Lee, Kuan-Lin; Wu, Wen-Ti; Hsu, Chien-Feng; Tseng, Zong‐Liang; Sun, Xin; Kao, Yu-Ting

doi:10.1186/s11671-018-2556-8

Cited by 25 publications

(19 citation statements)

References 23 publications

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“…The 68 and 142 cm −1 bands matched with the obtained results from XRD that confirmed the incorporation of TBA, which plays a vital role in the formation of crystallinity(Fateev et al, 2018).Figure3illustrates the SEM images of MA 1−x TBA x PbI 3 where X % (0%, 1%, 2.5%, 5%, 10%). The undoped MAPbI 3 shows a small grain size with a smooth surface and good distribution of lead and iodide(Chen et al, 2018). In the same way, the TBA incorporation increase gradually grain size of 210 nm for pure MAPbI 3 , 290 nm for the doped MAPbI 3 with 1.0% TBA, 490 nm for 2.50% TBA as well as with a higher value of 500 nm for 5.0%…”

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confidence: 64%

Tetrabutylammonium (TBA)-Doped Methylammonium Lead Iodide: High Quality and Stable Perovskite Thin Films

et al. 2022

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This work reported the successive incorporation of tetrabutylammonium (TBA) into Methylammonium lead Iodide (MAPbI3) perovskite. The thin films were characterized by X-Ray diffraction (XRD), Scanning electron microscopy (SEM), Transmittance electron microscopy (TEM), Atomic force microscopy (AFM), and UV-Visible spectroscopy. It was shown that introducing TBA increases the crystallinity, grain size, surface morphology without pin-hole, and roughness of the MAPbI3 thin films. Moreover, the MA(1-X)TBAX PbI3 thin film shows better stability in a relative humidity of ∼60% after 15 days than the pure MAPbI3 thin film. The obtained results are hoped to be helpful for stability and improvement of the performance of the MAPbI3 thin films by doping TBA cations under ambient conditions.

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confidence: 64%

Tetrabutylammonium (TBA)-Doped Methylammonium Lead Iodide: High Quality and Stable Perovskite Thin Films

et al. 2022

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“…Hybrid organic-inorganic perovskite materials have been widely accepted and applied in solar cells. The power conversion efficiency has evolved from 3.8% in 2009 to a certified value of 22.7% in 2018 [1,2,3,4,5]. Perovskite materials are a versatile material with unique optoelectronic properties, exhibiting strong light absorption, long diffusion length, and high mobility [6].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Efficiency of MAPbI3 Perovskite Solar Cells with FAPbX3 Perovskite Quantum Dots

et al. 2019

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We describe a method to enhance power conversion efficiency (PCE) of MAPbI3 perovskite solar cell by inserting a FAPbX3 perovskite quantum dots (QD-FAPbX3) layer. The MAPbI3 and QD-FAPbX3 layers were prepared using a simple, rapid spin-coating method in a nitrogen-filled glove box. The solar cell structure consists of ITO/PEDOT:PSS/MAPbI3/QD-FAPbX3/C60/Ag, where PEDOT:PSS, MAPbI3, QD-FAPbX3, and C60 were used as the hole transport layer, light-absorbing layer, absorption enhance layer, and electron transport layer, respectively. The MAPbI3/QD-FAPbX3 solar cells exhibit a PCE of 7.59%, an open circuit voltage (Voc) of 0.9 V, a short-circuit current density (Jsc) of 17.4 mA/cm2, and a fill factor (FF) of 48.6%, respectively.

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“…To examine the reasonability of our developed PCE model, we make a comparison of PCE values among our developed model and other methods, including Scharber’s model and the spectroscopic limited maximum efficiency (SLME) method . Using the experimental data of MAPbI 3 -based and 2D HLIP-based devices from previous literatures − as input parameters, including E g , FF, V OC , and L , the PCE values of these perovskite solar cells have been calculated and listed in Table . It can be seen that the predicted η values obtained by our developed model agree well with the experimental data, but other methods overestimate the PCE values.…”

Section: Resultsmentioning

confidence: 99%

Spacer Cation Engineering of Two-Dimensional Hybrid Perovskites with Tunable Band Alignment and Optoelectronic Properties

et al. 2022

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Band alignment between the organic and inorganic layers in two-dimensional (2D) hybrid perovskites inherently determines their carrier spatial confinement and charge separation, which is of great importance for optoelectronic applications. However, 2D perovskites usually exhibit type I band alignment with large exciton binding energies, making them difficult to be applied in photovoltaic devices and photodetectors. Here we report the spacer cation engineering of 2D hybrid lead iodine perovskites (HLIPs) for achieving tunable band alignments and improved optoelectronic properties based on density functional theory (DFT) calculations. Our calculated results indicate that the electronic structures and carrier spatial distribution of 2D HLIPs can be tuned by incorporating appropriate spacer organic cations. Furthermore, (DPA)2(MA) n−1Pb n I3n+1 has been found as a class of promising 2D HLIPs with the type II band alignment, optimal band gaps (1.54–1.96 eV), and large absorption coefficients (>105 cm–1) in the visible region, which makes their high power conversion efficiency (PCE) up to 22% predicted by a developed PCE model. This work opens up a route to rationally design 2D hybrid halide perovskites for photodetectors and photovoltaic applications.

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Effect of Different CH3NH3PbI3 Morphologies on Photovoltaic Properties of Perovskite Solar Cells

Cited by 25 publications

References 23 publications

Tetrabutylammonium (TBA)-Doped Methylammonium Lead Iodide: High Quality and Stable Perovskite Thin Films

Tetrabutylammonium (TBA)-Doped Methylammonium Lead Iodide: High Quality and Stable Perovskite Thin Films

Enhanced Efficiency of MAPbI3 Perovskite Solar Cells with FAPbX3 Perovskite Quantum Dots

Spacer Cation Engineering of Two-Dimensional Hybrid Perovskites with Tunable Band Alignment and Optoelectronic Properties

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