The efficient and non-hysteresis inverted non-fullerenes/CH3NH3PbI3 planar solar cells

Fan, Baojin; He, Zhen; Xiong, Jian; Zhao, Qian; Dai, Zhongjun; Yang, Bingchu; Xue, Xiaogang; Cai, Ping; Zhan, Shiping; Tong, Shuang; Yang, Junliang; Zhang, Jian

doi:10.1016/j.solener.2019.07.073

Cited by 18 publications

(17 citation statements)

References 44 publications

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“…To further quantify the reduced hysteresis, the hysteresis index (HI) of the control and the MAPbI 3 –20 mol% MACl devices prepared under the same conditions were calculated, which can be calculated from Equation (). [ 30 ]

HI = \frac{{PCE}^{-} - {PCE}^{+}}{{PCE}^{-} + {PCE}^{+}} \times 100 %

…”

Section: Resultsmentioning

confidence: 99%

Room‐Temperature‐Processed, Carbon‐Based Fully Printed Mesoscopic Perovskite Solar Cells with 15% Efficiency

et al. 2021

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Methylamine (MA) and methylamine hydrochloride (MACl) are widely used to prepare highly efficient and stable perovskite solar cells (PSCs). However, MA, as a gas, is difficult to handle and inevitably leads to a large amount of escape, and it is difficult to quantitatively calculate. Herein, selecting a mixture solvent of methylamine ethanol solution (MA‐EtOH sol) and acetonitrile (ACN) as a solvent, a new strategy for preparing fully printed mesoscopic perovskite solar cells (MPSCs) at room temperature is first proposed. With the introduction of 20 mol% MACl as additive, the fully printed MPSCs are fabricated without any posttreatment at room temperature via a one‐step drop‐coating method. As a consequence, the average power conversion efficiency (PCE) of 14.73 ± 0.3% (0.1 cm2) with almost no hysteresis is achieved. Most importantly, the device also exhibits excellent long‐term stability when it is unencapsulated. Specifically, the unencapsulated device still retains nearly 100% of its original PCE after 64 days and 88% after 81 days of storage in the dark with a humidity of 50 ± 5% in an atmospheric environment. It provides a new idea for constructing fully printed MPSCs at room temperature in the future.

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HI = \frac{{PCE}^{-} - {PCE}^{+}}{{PCE}^{-} + {PCE}^{+}} \times 100 %

…”

Section: Resultsmentioning

confidence: 99%

Room‐Temperature‐Processed, Carbon‐Based Fully Printed Mesoscopic Perovskite Solar Cells with 15% Efficiency

et al. 2021

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“…The experiment process of this strategy is shown in Figure S1, Supporting Information. The perovskite films were prepared by a modified two‐step method according to our previous work . For the air‐retreatment process, we let the perovskite film expose in the air with varying temperature (40–100 °C).…”

Section: Methodsmentioning

confidence: 99%

A Facile Air‐Retreatment Strategy for Efficient Inverted Perovskite Solar Cells

Dai

Xiong

Zhan

et al. 2020

Physica Rapid Research Ltrs

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A simple air‐retreatment strategy is proposed to improve the performance of the inverted perovskite solar cells (PSCs). This air‐retreatment impact on the physical properties and corresponding performance of the devices is systematically studied. The results show that the grain size of perovskite films is enhanced by this method, and the high quality of MAPbI3 films is successfully prepared. The average grain size of 3.91 μm and the largest grain size exceeding 9 μm are achieved, and the trap states are reduced from 4.05 × 1016 cm−3 to 1.60 × 1016 cm−3. Benefitted by the relatively larger grain size, lower trap density, and higher crystallinity, a high power conversion efficiency (PCE) of 18.44% and negligible hysteresis are obtained. This air‐retreatment strategy has great potential in the large‐scale, low‐temperature preparation of efficient and stable PSCs.

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“…[182] The PSCs with FTO/C 60 /MAPbI 3 /carbon structure achieved a high efficiency of 15.38% without hysteresis, due to the fact that C 60 can promote charge extraction and reduce the sub-bandgap state at the interface. [183] Other organic materials such as [6,6]-phenyl C 71 butyric acid methyl ester (PC 71 BM), [184] fulleropyrrolidinium iodide (C 60 -bis), [185] poly(9,9-dioctyfluorene-co-benzothiazole) (F8BT), [186] N,N 0 -bis(3-(dimethylamino)propyl)-5,11-dioctylcoronene-2,3,8,9-tetracar-boxdiimide (CDIN), [187] indacenodithieno [3,2-b]thiophene (IT) like (IT-like) [188] can also effectively suppress or eliminate the hysteresis. Moreover, the solid ionic liquid (ss-IL) with high conductivity and electron mobility as ETL can significantly reduce the defect density and effectively suppress the hysteresis.…”

Section: Other Etm With Excellent Performancementioning

confidence: 99%

The J–V Hysteresis Behavior and Solutions in Perovskite Solar Cells

Wang

Lei

et al. 2020

Solar RRL

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The power conversion efficiency (PCE) of perovskite solar cells (PSCs) has exceeded 25%, showing great potential in the photovoltaic field. However, PSCs often show anomalous current density–voltage (J–V) hysteresis behavior in the forward and reverse scanning directions, which makes it impossible to accurately evaluate the performance of PSCs. Therefore, it is necessary to clearly understand the mechanism of hysteresis and suppress the hysteresis. Herein, the J–V hysteresis behavior in PSCs and strategies to suppress hysteresis is focused: first, the various factors that affect J–V hysteresis in PSCs are summarized. And the mechanism behind the various possible origins of hysteresis and the challenges encountered are explored. Then, the strategies to suppress or eliminate the hysteresis are summarized, including optimizing the perovskite light‐absorbing layer, improving the performance of the carrier transport layer and interface engineering. Finally, insights on the future development of the hysteresis are also provided.

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The efficient and non-hysteresis inverted non-fullerenes/CH3NH3PbI3 planar solar cells

Cited by 18 publications

References 44 publications

Room‐Temperature‐Processed, Carbon‐Based Fully Printed Mesoscopic Perovskite Solar Cells with 15% Efficiency

Room‐Temperature‐Processed, Carbon‐Based Fully Printed Mesoscopic Perovskite Solar Cells with 15% Efficiency

A Facile Air‐Retreatment Strategy for Efficient Inverted Perovskite Solar Cells

The J–V Hysteresis Behavior and Solutions in Perovskite Solar Cells

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