Amazing stable open-circuit voltage in perovskite solar cells using AgAl alloy electrode

Jiang, Ziyao; Chen, Xiaohong; Lin, Xuanhuai; Jia, Xiangkun; Wang, Jinfeng; Pan, Likun; Huang, Sumei; Zhu, Fu Rong; Sun, Zhuo

doi:10.1016/j.solmat.2015.11.026

Cited by 78 publications

(74 citation statements)

References 49 publications

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“…[ 43 ] In addition, reports suggesting interaction of the perovskite iodide with the Al metal are another degradation mechanism of perovskite-based solar cells. [ 44 ] Since a thick AZO layer is in between the perovskite/PCBM layers and the Al we suggest that the delay in degradation of the p-i-n device when AZO is used could potentially be attributed to a delay in interaction between the perovskite and the top metal. Despite that, the Al oxidation is a separate mechanism and thus the devices using AZO also degrade after 1000 h of exposure.…”

Section: Resultsmentioning

confidence: 92%

Improved Performance and Reliability of p‐i‐n Perovskite Solar Cells via Doped Metal Oxides

Savva

Burgués‐Ceballos

Choulis

2016

Advanced Energy Materials

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Perovskite photovoltaics (PVs) have attracted attention because of their excellent power conversion efficiency (PCE). Critical issues related to large‐area PV performance, reliability, and lifetime need to be addressed. Here, it is shown that doped metal oxides can provide ideal electron selectivity, improved reliability, and stability for perovskite PVs. This study reports p‐i‐n perovskite PVs with device areas ranging from 0.09 cm2 to 0.5 cm2 incorporating a thick aluminum‐doped zinc oxide (AZO) electron selective contact with hysteresis‐free PCE of over 13% and high fill factor values in the range of 80%. AZO provides suitable energy levels for carrier selectivity, neutralizes the presence of pinholes, and provides intimate interfaces. Devices using AZO exhibit an average PCE increase of over 20% compared with the devices without AZO and maintain the high PCE for the larger area devices reported. Furthermore, the device stability of p‐i‐n perovskite solar cells under the ISOS‐D‐1 is enhanced when AZO is used, and maintains 100% of the initial PCE for over 1000 h of exposure when AZO/Au is used as the top electrode. The results indicate the importance of doped metal oxides as carrier selective contacts to achieve reliable and high‐performance long‐lived large‐area perovskite solar cells.

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Section: Resultsmentioning

confidence: 92%

Improved Performance and Reliability of p‐i‐n Perovskite Solar Cells via Doped Metal Oxides

Savva

Burgués‐Ceballos

Choulis

2016

Advanced Energy Materials

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“…This was evidently due to the encapsulation failing and substantial water ingress causing complete active layer decomposition [35], [36], [37]. to be susceptible to oxygen and water-induced degradation [38], [39], so is not surprising that the failure was catastrophic at this point. It is important to note this edge sealant, which is based upon a thermosetting epoxy, has been used before in OPV and dye sensitised solar cell modules, with similar size modules and also on glass substrate and has been shown to achieve over one year of outdoor performance.…”

Section: Degradation Of Psc Modulesmentioning

confidence: 99%

Outdoor performance monitoring of perovskite solar cell mini-modules: Diurnal performance, observance of reversible degradation and variation with climatic performance

et al. 2018

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The outdoor performance monitoring of two types of perovskite solar cell (PSC) mini-modules based on two different absorbers-CH3NH3PbI3 (MAPI) and Cs0.05FA0.83MA0.17PbI(0.87Br0.13)3 (FMC) is reported. PSC modules displayed markedly different outdoor performance characteristics to other PV technologies owing to the reversible diurnal changes in efficiency, difference in temperature coefficient between absorber layers and response under low light conditions. Examination of diurnal performance parameters on a sunny day showed that whereas the FMC modules maintained their efficiency throughout the day, the MAPI modules peaked in performance during the morning and afternoon, with a strong decrease around midday. Overall, the MAPI modules showed a strongly negative temperature coefficient (TC) for PCE, whereas the FMC modules showed a moderate positive temperature coefficient performance as a function of temperature due to the increase in JSC and FF. Outdoor monitoring of the MAPI modules over several days highlighted that the reduced over the course of the day but recovered overnight. In contrast the FMC modules improved slightly during the daytime although this was too reversed overnight. This paper provides insight into how PSC modules perform under real-life conditions and consider some of the unique characteristics that are observed in this solar cell technology.

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“…First, the Au NPs can be etched by the halide during the processing CH 3 NH 3 PbI 3 absorber and the gold diffusion and migration into the perovskite material possibly take place in the thermal annealing treatment of the perovskite precursor films, causing detrimental and irreversible changes to the absorber. [27][28][29] Au migration into the perovskite material was found for PSC devices with metal contacts under thermal stress even at 70 °C. 28 This metal migration was observed to cause irreversible changes to the devices and in turn severely affected the device performance metrics.…”

Section: Methodsmentioning

confidence: 94%

Efficient perovskite solar cells by combination use of Au nanoparticles and insulating metal oxide

et al. 2017

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Achieving high open-circuit voltage and high short-circuit current density simultaneously is a big challenge in the development of highly efficient perovskite solar cells, due to the complex excitonic nature of hybrid organic-inorganic semiconductors. Herein, we developed a facile and effective method to fabricate efficient plasmonic PSC devices. The solar cells were prepared by incorporating Au nanoparticles (NPs) into mesoporous TiO films and depositing a MgO passivation film on the Au NP-modified mesoporous titania via wet spinning and pyrolysis of magnesium salt. The PSCs obtained by combining Au NPs and MgO demonstrated a high power conversion efficiency of 16.1%, with both a high open-circuit voltage of 1.09 V and a high short-circuit current density of 21.76 mA cm. The device achieved a 34.2% improvement in the power conversion efficiency compared with a device based on pure TiO. Moreover, a significant improvement of the UV stability in the perovskite solar cell was achieved due to the combined use of Au NPs and insulating MgO. The fundamental optics and physics behind the regulation of energy flow in the perovskite solar cell and the concept of using Au NPs and MgO to improve the device performance were explored. The results indicate that the combined use of Au NPs and a MgO passivation film is an effective way to design high performance and high stability organic-inorganic perovskite photovoltaic materials.

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Amazing stable open-circuit voltage in perovskite solar cells using AgAl alloy electrode

Cited by 78 publications

References 49 publications

Improved Performance and Reliability of p‐i‐n Perovskite Solar Cells via Doped Metal Oxides

Improved Performance and Reliability of p‐i‐n Perovskite Solar Cells via Doped Metal Oxides

Outdoor performance monitoring of perovskite solar cell mini-modules: Diurnal performance, observance of reversible degradation and variation with climatic performance

Efficient perovskite solar cells by combination use of Au nanoparticles and insulating metal oxide

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