Lead acetate precursor based p-i-n perovskite solar cells with enhanced reproducibility and low hysteresis

Forgács, Dávid; Sessolo, Michele; Bolink, Henk J.

doi:10.1039/c5ta03169a

Cited by 76 publications

(65 citation statements)

References 32 publications

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“…Consequently, the PSC device showed a high PCE up to 15% and good reproducibility with no obvious hysteresis (Figure 15 c). Furthermore, the Bolink group [ 143 ] investigated the effect of an alternative precursor, lead acetate, on the preparation of a planar PSC device. By substituting lead acetate for lead iodide, they obtained smooth perovskite fi lm that was pinhole-free over [ 53 ] Copyright 2013, Nature Publishing Group.…”

Section: Hysteresis-free Pscmentioning

confidence: 99%

Recent Advances in Improving the Stability of Perovskite Solar Cells

Tiệp

Fan

2015

Advanced Energy Materials

322

242

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Organometal trihalide perovskites have recently emerged as promising materials for low‐cost, high‐efficiency solar cells. In less than five years, the efficiency of perovskite solar cells (PSC) has been updated rapidly as a result of new strategies adopted in their fabrication process, including device structure, interfacial engineering, chemical compositional tuning, and crystallization kinetics control. To date, the best PSC efficiency has reached 20.1%, which is close to that of single crystal silicon solar cells. However, the stability of PSC devices is still unsatisfactory and is the main bottleneck impeding their commercialization. Here, we summarize recent studies on the degradation mechanisms of organometal trihalide perovskites in PSC devices, and the strategies for stability improvement.

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Section: Hysteresis-free Pscmentioning

confidence: 99%

Recent Advances in Improving the Stability of Perovskite Solar Cells

Tiệp

Fan

2015

Advanced Energy Materials

322

242

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“…[112][113][114] Based on PbAc 2 lead source, Bolink et al prepared smooth MAPbI 3 perovskite fi lms on the top of PEDOT:PSS. [112][113][114] Based on PbAc 2 lead source, Bolink et al prepared smooth MAPbI 3 perovskite fi lms on the top of PEDOT:PSS.…”

Section: And Maac Refers To Ch 3 Nh 3 (Ch 3 Coo)mentioning

confidence: 99%

Inverted Perovskite Solar Cells: Progresses and Perspectives

Liu

Chen

et al. 2016

Advanced Energy Materials

419

377

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During the past 6 years, perovskite solar cells have experienced a rapid development and shown great potential as the next‐generation photovoltaics. For the perovskite solar cells with regular structure (n‐i‐p structure), device efficiency has reached over 20% after the intense efforts of researchers from all over the world. Recently, perovskite solar cells with the inverted structure (p‐i‐n structure) have been becoming more and more attractive, owing to their easy‐fabrication, cost‐effectiveness, and suppressed hysteresis characteristics. Some recent progress in their device performance and stability has indicated their promising future. Here, recent developments and future perspectives about inverted perovskite solar cells are reviewed. Interface engineering, film morphology control, device stability, hysteresis phenomena and other research hotspots are discussed to present the roadmap for the development of inverted perovskite solar cells.

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“…7 In order to become a veritable rival of silicon, however, several more challenges have to be met, one of which is the development of upscalable deposition processes. [16][17][18][19][20][21][22][23][24][25] It was indeed observed that the presence of even minute amounts of moisture during fabrication can have a detrimental influence on the perovskite's morphology, optical properties and crystallinity, which is obviously reflected in much lower device performance. [9][10][11][12] It is not clear, however, how strict the processing requirements should be in a corresponding production line.…”

Section: Introductionmentioning

confidence: 99%

The impact of precursor water content on solution-processed organometal halide perovskite films and solar cells

et al. 2015

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Perovskite solar cells are well known to degrade under post-fabrication stress, a.o. due to humidity as a consequence of the hydrophilic property of the organic cation. On the other hand, it has been shown that the controlled addition of water molecules during the formation of the perovskite (while starting from water-free precursor materials) yields larger perovskite crystals with less defects, resulting in better device performance. One aspect still missing in this line of research is the water content of the perovskite precursors themselves: whereas most of them are prepared with anhydrous solvents as a precaution towards premature degradation, it is still unclear whether or not the precursors really need to be dry. In this paper, the impact of the perovskite precursor's water content up to 10 vol% is investigated, in the form of a detailed study regarding the opto-electronic and morphological properties of the resulting films and devices. It is found that only modest changes occur in the films that do not affect the final photovoltaic performance, thus relaxing the conditions for large-scale production of this upcoming photovoltaic technology.loss in V oc . Additionally, if trace amounts of water would at all be trapped inside the perovskite crystal, the band gap is expected to widen rather than shrink, or at least stay unaffected, as follows from molecular dynamics simulations by Mosconi et al.. 44 As the observed PL blue-shift also points to smaller grain sizes, we surmise that the thus induced inferior local charge transport causes increased non-geminate recombination, which in turn affects the V oc . 28, 42, 45 Figure 5: Photovoltaic parameters of perovskite solar cells with active layers prepared from precursors with different water content. Error bars represent the standard deviation based on 8 devices per condition. J sc values correspond with those estimated from EQE measurements within <5% (see Fig. S2).In summary, we have investigated the influence of water contamination in organometal halide perovskite precursors on the resulting perovskite films and solar cells. The small changes that do occur in terms of morphology and optical properties of the films are found not to have considerable influence on the photovoltaic performance of devices. Our findings thus demonstrate that to obtain decently performing perovskite solar cells, in principle no precautions need to be taken concerning the anhydrous quality of the used precursor solvent. This is a far-reaching outcome as the elimination of this redundant requirement relaxes the necessary conditions for the fabrication of perovskite-based opto-electronic devices, and brings perovskite technology one step closer to large-scale production and applications.In this paper, the impact of the water content (up to 10 vol%) in DMF-based precursors for organometal halide perovskites is investigated. It is found that only modest changes occur in the films that do not affect the final photovoltaic performance, thus relaxing the conditions for large-scale product...

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Lead acetate precursor based p-i-n perovskite solar cells with enhanced reproducibility and low hysteresis

Cited by 76 publications

References 32 publications

Recent Advances in Improving the Stability of Perovskite Solar Cells

Recent Advances in Improving the Stability of Perovskite Solar Cells

Inverted Perovskite Solar Cells: Progresses and Perspectives

The impact of precursor water content on solution-processed organometal halide perovskite films and solar cells

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