Achieving high efficiency and improved stability in large-area ITO-free perovskite solar cells with thiol-functionalized self-assembled monolayers

Chang, Ching‐Ping; Chang, Yu Chia; Huang, Wei-Chen; Liao, Wen Chi; Wang, Hung; Yeh, Chieh; Tsai, Bo Chou; Yu, Hao; Tsao, Cheng Si

doi:10.1039/c6ta02581a

Cited by 67 publications

(69 citation statements)

References 53 publications

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“…Unlike single-crystal silicon solar cells which have an average of 20-year lifetime, the lifetime of perovskite solar cell remains a challenge and is hotly debated. To date, only several fabrication techniques and architectures demonstrate promising lengthy lifetime17181920212223242526.…”

Section: Resultsmentioning

confidence: 99%

Bandgap tuning of mixed organic cation utilizing chemical vapor deposition process

Kim

Teridi

et al. 2016

Sci Rep

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Bandgap tuning of a mixed organic cation perovskite is demonstrated via chemical vapor deposition process. The optical and electrical properties of the mixed organic cation perovskite can be manipulated by varying the growth time. A slight shift of the absorption band to shorter wavelengths is demonstrated with increasing growth time, which results in the increment of the current density. Hence, based on the optimized growth time, our device exhibits an efficiency of 15.86% with negligible current hysteresis.

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Section: Resultsmentioning

confidence: 99%

Bandgap tuning of mixed organic cation utilizing chemical vapor deposition process

Kim

Teridi

et al. 2016

Sci Rep

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“…The performance degradation of PSCs can occur as a result of thermal instability, sensitivity of the perovskite material to ambient air (humidity and oxygen), and degradation caused by other device components (e.g., degradation at the TiO 2 interface under light exposure and poor stability of the hole‐transport material) . Consequently, the stability of the perovskite thin films and PSCs has been extensively studied, including the degradation of the perovskite material upon exposure to humidity, illumination, or elevated temperature . Different strategies have been pursued to improve the stability of PSCs, such as modifications of the perovskite material composition or deposition process, replacement of the mesoporous layer, the use of different additives and/or charge‐transport materials, surface treatments and/or interfacial layers, and the use of carbon‐based electrodes …”

Section: Introductionmentioning

confidence: 99%

Encapsulation of Perovskite Solar Cells for High Humidity Conditions

et al. 2016

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We examined different encapsulation strategies for perovskite solar cells by testing the device stability under continuous illumination, elevated temperature (85 °C) and ambient humidity of 65 %. The effects of the use of different epoxies, protective layers and the presence of desiccant were investigated. The best stability (retention of ∼80 % of initial efficiency on average after 48 h) was obtained for devices protected by a SiO film and encapsulated with a UV-curable epoxy including a desiccant sheet. However, the stability of ZnO-based cells encapsulated by the same method was found to be inferior to that of TiO -based cells. Finally, outdoor performance tests were performed for TiO -based cells (30-90 % ambient humidity). All the stability tests were performed following the established international summit on organic photovoltaic stability (ISOS) protocols for organic solar cell testing (ISOS-L2 and ISOS-O1).

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“…The most commonly employed PSC structure consists of a mesoporous electron transport layer such as TiO 2 , followed by perovskite absorber layer and spiro-OMeTAD as a hole transport layer. Various attempts have been made to alter the morphological and structural properties of the hole transporting material (HTM), the absorber material, and electron transporting layer (ETL) to enhance the device performance [5][6][7]. In spite of the advances in device efficiency and architecture, many aspects of device processes occurring at the bulk (inside) and interfaces are still lagging behind.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Kinetics of Efficient Perovskite Solar Cells

et al. 2017

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Perovskite solar cells (PSCs) have immense potential for high power conversion efficiency with an ease of fabrication procedure. The fundamental understanding of interfacial kinetics in PSCs is crucial for further improving of their photovoltaic performance. Herein we use the current-voltage (J-V) characteristics and impedance spectroscopy (IS) measurements to probe the interfacial kinetics on efficient MAPbI 3 solar cells. We show that series resistance (R S ) of PSCs exhibits an ohmic and non-ohmic behavior that causes a significant voltage drop across it. The Nyquist spectra as a function of applied bias reveal the characteristic features of ion motion and accumulation that is mainly associated with the MA cations in MAPbI 3 . With these findings, we provide an efficient way to understand the working mechanism of perovskite solar cells.

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Achieving high efficiency and improved stability in large-area ITO-free perovskite solar cells with thiol-functionalized self-assembled monolayers

Abstract: A promising approach towards highly efficient and stable large-area ITO-free perovskite solar cells is demonstrated by employing thiol-functionalized self-assembled monolayers as interfacial modification layers.

Cited by 67 publications

References 53 publications

Bandgap tuning of mixed organic cation utilizing chemical vapor deposition process

Bandgap tuning of mixed organic cation utilizing chemical vapor deposition process

Encapsulation of Perovskite Solar Cells for High Humidity Conditions

Interfacial Kinetics of Efficient Perovskite Solar Cells

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