Controllable Self-Induced Passivation of Hybrid Lead Iodide Perovskites toward High Performance Solar Cells

Chen, Qi; Zhou, Huanping; Song, Tze‐Bin; Luo, Shuai; Hong, Ziruo; Duan, Hsin‐Sheng; Dou, Letian; Liu, Yongsheng; Yang, Yang

doi:10.1021/nl501838y

Cited by 1,429 publications

(1,400 citation statements)

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“…Also in Figure 2(b), the XRD diffraction peaks around 14.21°, 28.51°, and 31.88°are assigned to the (110), (220), and (310) lattice planes, respectively, of the tetragonal perovskite structure, which indicates the formation of perovskite film. The XRD peak at 12.7°is corresponding to the cubic PbI 2 [40,41]; this is a very typical observation for the incomplete conversion into the photoactive black phase in the mixed perovskite composition. Based on the high-quality perovskite film and four-terminal architecture, the performance of fabricated devices are discussed as follows.…”

Section: Resultsmentioning

confidence: 85%

Efficient Semitransparent Perovskite Solar Cells Using a Transparent Silver Electrode and Four-Terminal Perovskite/Silicon Tandem Device Exploration

Chen

Pang

Zhang

et al. 2018

Journal of Nanomaterials

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Four-terminal tandem solar cells employing a perovskite top cell and crystalline silicon (Si) bottom cell offer a simpler pathway to surpass the efficiency limit of market-leading single-junction silicon solar cells. To obtain cost-effective top cells, it is crucial to develop transparent conductive electrodes with low parasitic absorption and manufacturing cost. The commonly used indium tin oxide (ITO) shows some drawbacks, like the increasing prices and high-energy magnetron sputtering process. Transparent metal electrodes are promising candidates owing to the simple evaporation process, facile process conditions, and high conductivity, and the cheaper silver (Ag) electrode with lower parasitic absorption than gold may be the better choice. In this work, efficient semitransparent perovskite solar cells (PSCs) were firstly developed by adopting the composite cathode of an ultrathin Ag electrode at its percolation threshold thickness (11 nm), a molybdenum oxide optical coupling layer, and a bathocuproine interfacial layer. The resulting power conversion efficiency (PCE) is 13.38% when the PSC is illuminated from the ITO side and the PCE is 8.34% from the Ag side, and no obvious current hysteresis can be observed. Furthermore, by stacking an industrial Si bottom cell (PCE = 14.2%) to build a four-terminal architecture, the overall PCEs of 17.03% (ITO side) and 11.60% (Ag side) can be obtained, which are 27% and 39% higher, respectively, than those of the perovskite top cell. Also, the PCE of the tandem cell has exceeded that of the reference Si solar cell by about 20%. This work provides an outlook to fabricate high-performance solar cells via the cost-effective pathway.

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Section: Resultsmentioning

confidence: 85%

Efficient Semitransparent Perovskite Solar Cells Using a Transparent Silver Electrode and Four-Terminal Perovskite/Silicon Tandem Device Exploration

Chen

Pang

Zhang

et al. 2018

Journal of Nanomaterials

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“…[76] As a compromise, an MAI-VASP was proposed to fabricate perovskite thin films, where the solution-processed PbI 2 film was treated with MAI vapor. [26,93,113,114] VASP produces films with well-defined grain structure, with grain sizes up to the microscale and small surface roughness (Figure 3j). The as-deposited PbI 2 films were annealed in MAI vapor at 120, 150, or 165 °C in vacuum or N 2 atmosphere, to form the uniform and large-grain perovskite films.…”

Section: Vacuum Deposition Methods and Mai-vapor Assisted Solution Promentioning

confidence: 99%

Capturing the Sun: A Review of the Challenges and Perspectives of Perovskite Solar Cells

Petrus

Schlipf

Cheng

et al. 2017

Advanced Energy Materials

317

201

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following statement: These materials can be processed from solution and yet exhibit optoelectronic materials properties described in classic solid-state physics textbooks. This unprecedented combination has led to photovoltaic devices that can be processed at room temperature and achieve performance levels similar to industry giant polycrystalline silicon, from a starting point of 3.8% in 2009. [1][2][3][4] The first light-emitting electrochemical cells [5] and diodes [6][7][8] have also been introduced recently, leading to tunable light emission spectra and internal quantum efficiencies exceeding 15%.The road towards these achievements has been marked by a constant improvement of perovskite deposition techniques fueled by our increasing understanding of the crystallization processes. The choice of deposition technique, either from solution or vapor, and the composition and order in which precursor species are applied has a great influence on the crystallization kinetics. Here, one can distinguish one-step methods where the perovskite is formed from a precursor mixture dissolved in a common solution, and two-step methods where the inorganic compound is deposited first and transformed to the perovskite phase later by addition of the organic constituents. [9][10][11] Furthermore, many parameters during processing can have an effect on the crystallization mechanism and consequently on film morphology, such as the choice of solvents, concentrations and processing additives that are often not incorporated into the final product. [11][12][13] We discuss this aspect in Section 2, where we focus our attention on the most commonly employed solution-based techniques. Additionally, as for any new technology trying to displace an incumbent technology, higher efficiencies, lower costs, reproducibility, stability, and sustainability are paramount. In particular, reproducibility has been a major challenge in perovskite solar cells from the beginning: small variations in morphology, like crystal size, film roughness, and pinholes can have detrimental effects on photovoltaic performance. [14] On the other hand, current-voltage measurements often showed a hysteresis that is rarely seen in other photovoltaic technologies. [15] These topics are highlighted in Sections 3 and 4. Finally, in Section 5 we discuss the framework for market introduction, such as cost reduction by choosing low-cost charge transport layers, or how the lifetime of perovskite absorbers can be extended by the choice of materials composition.Hybrid metal halide perovskites have become one of the hottest topics in optoelectronic materials research in recent years. Not only have they surpassed everyone's expectations and achieved similar performance as tried and true polycrystalline silicon photovoltaic devices, but they are also finding applications in a variety of different fields, including lighting. The main advantages of hybrid metal halide perovskites are simple processability, compatible with large-scale solution processing such as roll-to-roll printing, a...

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“…The performance of solar cells, however, is well known to be sensitive to the interface properties. [27,28] We were thus driven to further investigate the potential of enhancing the performance of monocrystalline film-based devices by modifying those properties. We therefore examined a single p-n junction based cell structure, i.e.…”

mentioning

confidence: 99%

Solution‐Grown Monocrystalline Hybrid Perovskite Films for Hole‐Transporter‐Free Solar Cells

et al. 2016

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Controllable Self-Induced Passivation of Hybrid Lead Iodide Perovskites toward High Performance Solar Cells

Cited by 1,429 publications

References 32 publications

Efficient Semitransparent Perovskite Solar Cells Using a Transparent Silver Electrode and Four-Terminal Perovskite/Silicon Tandem Device Exploration

Efficient Semitransparent Perovskite Solar Cells Using a Transparent Silver Electrode and Four-Terminal Perovskite/Silicon Tandem Device Exploration

Capturing the Sun: A Review of the Challenges and Perspectives of Perovskite Solar Cells

Solution‐Grown Monocrystalline Hybrid Perovskite Films for Hole‐Transporter‐Free Solar Cells

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