Full Printable Processed Mesoscopic CH3NH3PbI3/TiO2 Heterojunction Solar Cells with Carbon Counter Electrode

Ku, Zhiliang; Rong, Yaoguang; Xu, Mi; Liu, Tongfa; Han, Hongwei

doi:10.1038/srep03132

Cited by 749 publications

(640 citation statements)

References 29 publications

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“…In fact, similarly to DSCs, it is mainly utilized for the deposition of the nanocrystalline scaffolds in the mesoporous PSC architectures at both the cell level and module level (since it enables patterned deposition of the unit cells 45 ). Arguably one of the most interesting developments regarding screen printing has been the development of fully printed PSCs utilizing a stack of mesoporous layers, 5,46,47 as shown in Figure 3(f). 48 A three-layer stack of 1 µm mesoporous TiO 2 ETL, a 2 µm mesoporous ZrO 2 spacer layer, and a 10 µm mesoporous carbon black/graphite top electrode were all screen printed over a conducting substrate covered by a thin compact layer of TiO 2 .…”

Section: Screen Printingmentioning

confidence: 99%

Research Update: Large-area deposition, coating, printing, and processing techniques for the upscaling of perovskite solar cell technology

et al. 2016

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To bring perovskite solar cells to the industrial world, performance must be maintained at the photovoltaic module scale. Here we present large-area manufacturing and processing options applicable to large-area cells and modules. Printing and coating techniques, such as blade coating, slot-die coating, spray coating, screen printing, inkjet printing, and gravure printing (as alternatives to spin coating), as well as vacuum or vapor based deposition and laser patterning techniques are being developed for an effective scale-up of the technology. The latter also enables the manufacture of solar modules on flexible substrates, an option beneficial for many applications and for roll-to-roll production.

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Section: Screen Printingmentioning

confidence: 99%

Research Update: Large-area deposition, coating, printing, and processing techniques for the upscaling of perovskite solar cell technology

et al. 2016

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“…19 Previously, we have developed a triple-layer architecture of TiO 2 /ZrO 2 /Carbon to fabricate a hole-conductor-free printable mesoscopic PSC. 21,22 By optimizing the mesoporous scaffold and perovskite absorber, hysteresis-less devices have been obtained with TiO 2 as the electron transporting layer (ETL). 23,24 In this study, it was found that the type of hysteresis effect in printable mesoscopic PSCs was highly dependent on the interlayer of c-TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Tunable hysteresis effect for perovskite solar cells

Rong

Ravishankar

et al. 2017

Energy Environ. Sci.

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204

195

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Perovskite solar cells (PSCs) usually suffer an anomalous hysteresis in current-voltage measurements that leads to an inaccurate estimation of the device efficiency. Although ion migration, charge trapping/detrapping and accumulation have been proposed as a basis for the hysteresis, the origin of hysteresis has not been apparently unraveled. Herein we reported a tunable hysteresis effect based uniquely on open-circuit voltage variations in printable mesoscopic PSCs with a simplified triple-layer TiO2/ZrO2/Carbon architecture. The electrons are collected by the compact TiO2/mesoporous TiO2 (cTiO2/mp-TiO2) bilayer, and the holes are collected by the carbon layer. By adjusting the spray deposition cycles for the cTiO2 layer, we achieved hysteresis-normal, hysteresis-free, and hysteresis-inverted PSCs. Such unique trends of tunable hysteresis are analysed by considering the polarization of the TiO2/perovskite interface, which can accumulate positive charges reversibly. Successfully tuning the hysteresis effect clarifies the critical importance of the c-TiO2/perovskite interface in controlling the hysteretic trends observed, providing important insights towards the understanding of this rapidly developing photovoltaic technology.

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“…Recently, perovskite solar cells using poly(triaryl amine) HTLs have achieved the highest certified efficiency 7 . Significant efforts have been paid to search for alternative HBL and HTL materials or even to eliminate HTL layer [11][12][13][14] . Some lead halide perovskite solar cells without HTLs have achieved reasonable conversion efficiencies.…”

mentioning

confidence: 99%

Efficient hole-blocking layer-free planar halide perovskite thin-film solar cells

et al. 2015

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Efficient lead halide perovskite solar cells use hole-blocking layers to help collection of photogenerated electrons and to achieve high open-circuit voltages. Here, we report the realization of efficient perovskite solar cells grown directly on fluorine-doped tin oxide-coated substrates without using any hole-blocking layers. With ultraviolet-ozone treatment of the substrates, a planar Au/hole-transporting material/CH 3 NH 3 PbI 3-x Cl x /substrate cell processed by a solution method has achieved a power conversion efficiency of over 14% and an open-circuit voltage of 1.06 V measured under reverse voltage scan. The open-circuit voltage is as high as that of our best reference cell with a TiO 2 hole-blocking layer. Besides ultraviolet-ozone treatment, we find that involving Cl in the synthesis is another key for realizing high open-circuit voltage perovskite solar cells without hole-blocking layers. Our results suggest that TiO 2 may not be the ultimate interfacial material for achieving high-performance perovskite solar cells.

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Full Printable Processed Mesoscopic CH3NH3PbI3/TiO2 Heterojunction Solar Cells with Carbon Counter Electrode

Cited by 749 publications

References 29 publications

Research Update: Large-area deposition, coating, printing, and processing techniques for the upscaling of perovskite solar cell technology

Research Update: Large-area deposition, coating, printing, and processing techniques for the upscaling of perovskite solar cell technology

Tunable hysteresis effect for perovskite solar cells

Efficient hole-blocking layer-free planar halide perovskite thin-film solar cells

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