Improved External Quantum Efficiency from Solution-Processed (CH3NH3)PbI3 Perovskite/PC71BM Planar Heterojunction for High Efficiency Hybrid Solar Cells

Paek, Sanghyun; Cho, Nara; Choi, Hyeju; Jeong, Hanbin; Lim, Jin Sung; Hwang, Jane; Lee, Jae Kwan; Ko, Jaejung

doi:10.1021/jp508162p

Cited by 38 publications

(32 citation statements)

References 25 publications

(52 reference statements)

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“…Use of [6,6]-phenyl-C71-butyric acid methyl ester (PC 71 BM) exhibited improved photovoltaic performance with higher J sc and FF compared to those of PC 61 BM. This was attributed to a better external quantum efficiency in photocurrent than PC 61 BM as a result of enhanced spectral responses in the visible region [241,242]. Double-layered fullerenes, with a spun cast PCBM layer underneath followed by a thermal evaporated C 60 layer, were used as electron extraction layers [116,173].…”

Section: Electron Transport Materialsmentioning

confidence: 99%

Under the spotlight: The organic–inorganic hybrid halide perovskite for optoelectronic applications

et al. 2015

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The dawn of a new era in optoelectronic technologies has emerged with the recent development of the organic-inorganic hybrid halide perovskite. Its exceptional attributes, including high carrier mobility, an adjustable spectral absorption range, long diffusion lengths, and the simplicity and affordability of fabrication render it one of the most exceptional and market-competitive optoelectronic materials for applications in photovoltaics, light emitting diodes (LED), photodetectors, lasers, and more. Moreover, its versatility in device architecture and ability to achieve relatively high performance devices via various processing techniques makes perovskites a highly promising material for various practical applications. Here, we review the organic-inorganic hybrid halide perovskite and delve into its recent progress and relevant applications. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Section: Electron Transport Materialsmentioning

confidence: 99%

Under the spotlight: The organic–inorganic hybrid halide perovskite for optoelectronic applications

et al. 2015

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“…Absorbance spectra for the optimized samples (fabricated in runs 5 and 6) demonstrate suitable light absorbing potentials over the visible to near IR wavelengths. Photocurrent generation starts at 780 nm, in accordance with the bandgap of the CH 3 NH 3 PbI 3 Cl 3− x and reaches peak values of ∼85 % in the visible range [9, 43, 44]. A slight difference in absorbance of samples prepared at runs 5 and 6 (Fig.…”

Section: Resultsmentioning

confidence: 59%

“…The relatively uniform and dense crystalline structure of perovskite in this optimized sample enhances charge generation efficiency and consequently results in better diode-like behavior of the device. In addition, an intact, smooth, and uniform perovskite layer enables sufficient adhesion with HTM and ETM, and less charge transfer resistance at the interfaces [16, 18, 20, 43]. For the mixed-halide planar structures, higher performance has been reached with smaller thickness of active layer close to 390 nm [44].…”

Section: Resultsmentioning

confidence: 99%

“…10. The IPCE demonstrates the potential of charge generation in active layer as well as indicates the charge transport, charge collection, and mechanism of charge loss from the active layer toward the electrodes [29, 43–47]. The champion device shows the maximum IPCE (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The rather low IPCE in this simple cell structure compared to the state-of-the-art devices, e.g., [21], may be due to the imperfect structure of spray-deposited PCBM, leading to insufficient charge collection at the electrode/ETM and perovskite/ETM interfaces. It is also worth noting that the similar inverted structures with Al electrode incorporate an ultra-thin layer of Ca below Al to overcome the work function mismatch at the PCBM/metal contact junction [21, 43–47]. Application of Ca, however, imposes extra fabrication costs and is not compatible with large-scale fabrication of solar cells.…”

Section: Resultsmentioning

confidence: 99%

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Fundamental Study on the Fabrication of Inverted Planar Perovskite Solar Cells Using Two-Step Sequential Substrate Vibration-Assisted Spray Coating (2S-SVASC)

Zabihi¹,

Ahmadian‐Yazdi²,

Eslamian³

2016

Nanoscale Res Lett

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In this paper, a scalable and fast process is developed and employed for the fabrication of the perovskite light harvesting layer in inverted planar heterojunction solar cell (FTO/PEDOT:PSS/CH3NH3PbI3−xClx/PCBM/Al). Perovskite precursor solutions are sprayed onto an ultrasonically vibrating substrate in two sequential steps via a process herein termed as the two-step sequential substrate vibration-assisted spray coating (2S-SVASC). The gentle imposed ultrasonic vibration on the substrate promotes droplet spreading and coalescence, surface wetting, evaporation, mixing of reagents, and uniform growth of perovskite nanocrystals. The role of the substrate temperature, substrate vibration intensity, and the time interval between the two sequential sprays are studied on the roughness, coverage, and crystalline structure of perovskite thin films. We demonstrate that a combination of a long time interval between spraying of precursor solutions (15 min), a high substrate temperature (120 °C), and a mild substrate vibration power (5 W) results in a favorable morphology and surface quality. The characteristics and performance of prepared perovskite thin films made via the 2S-SVASC technique are compared with those of the co-sprayed perovskite thin films. The maximum power conversion efficiency of 5.08 % on a 0.3-cm2 active area is obtained for the device made via the scalable 2S-SVASC technique.

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Plasmonic‐Induced Photon Recycling in Metal Halide Perovskite Solar Cells

Saliba

Zhang

Burlakov

et al. 2015

Adv Funct Materials

203

190

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Organic–inorganic metal halide perovskite solar cells have emerged in the past few years to promise highly efficient photovoltaic devices at low costs. Here, temperature-sensitive core–shell Ag@TiO2 nanoparticles are successfully incorporated into perovskite solar cells through a low-temperature processing route, boosting the measured device efficiencies up to 16.3%. Experimental evidence is shown and a theoretical model is developed which predicts that the presence of highly polarizable nanoparticles enhances the radiative decay of excitons and increases the reabsorption of emitted radiation, representing a novel photon recycling scheme. The work elucidates the complicated subtle interactions between light and matter in plasmonic photovoltaic composites. Photonic and plasmonic schemes such as this may help to move highly efficient perovskite solar cells closer to the theoretical limiting efficiencies

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Improved External Quantum Efficiency from Solution-Processed (CH₃NH₃)PbI₃ Perovskite/PC₇₁BM Planar Heterojunction for High Efficiency Hybrid Solar Cells

Cited by 38 publications

References 25 publications

Under the spotlight: The organic–inorganic hybrid halide perovskite for optoelectronic applications

Under the spotlight: The organic–inorganic hybrid halide perovskite for optoelectronic applications

Fundamental Study on the Fabrication of Inverted Planar Perovskite Solar Cells Using Two-Step Sequential Substrate Vibration-Assisted Spray Coating (2S-SVASC)

Plasmonic‐Induced Photon Recycling in Metal Halide Perovskite Solar Cells

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