Halide Perovskite Photovoltaics: Background, Status, and Future Prospects

Jena, Ajay Kumar; Kulkarni, Ashish; Miyasaka, Tsutomu

doi:10.1021/acs.chemrev.8b00539

Cited by 2,266 publications

(1,963 citation statements)

References 461 publications

Supporting

Mentioning

1,850

Contrasting

Unclassified

Order By: Relevance

“…While R S is only affecting the FF, the lower J SC and V OC observed for the 4 mol% device could be caused by the lower R rec obtained for this sample (see Figure S8b in the Supporting Information). 2019, 9,1901519 Figure 1. a) UV-vis absorption spectra of HTM films doped with spiro-OMeTAD(TFSI) 2 (inset: absorption coefficient (α) of the spiro-OMeTAD(TFSI) 2 -doped spiro-OMeTAD films). It is worth noting that the large R HTM of the pristine spiro-OMeTAD is not enough to explain the low PCE of the sample (see Figure S9d in the supporting information) for extended analysis.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

LiTFSI‐Free Spiro‐OMeTAD‐Based Perovskite Solar Cells with Power Conversion Efficiencies Exceeding 19%

Tan

Raga

Chesman

et al. 2019

Advanced Energy Materials

106

View full text Add to dashboard Cite

To date, the most efficient perovskite solar cells (PSCs) employ an n–i–p device architecture that uses a 2,2′,7,7′‐tetrakis(N,N‐di‐p‐methoxyphenyl‐amine)‐9,9′‐spirobifluorene (spiro‐OMeTAD) hole‐transporting material (HTM), which achieves optimum conductivity with the addition of lithium bis(trifluoromethane)sulfonimide (LiTFSI) and air exposure. However, this additive along with its oxidation process leads to poor reproducibility and is detrimental to stability. Herein, a dicationic salt spiro‐OMeTAD(TFSI)2, is employed as an effective p‐dopant to achieve power conversion efficiencies of 19.3% and 18.3% (apertures of 0.16 and 1.00 cm2) with excellent reproducibility in the absence of LiTFSI and air exposure. As far as it is known, these are the highest‐performing n–i–p PSCs without LiTFSI or air exposure. Comprehensive analysis demonstrates that precise control of the proportion of [spiro‐OMeTAD]+ directly provides high conductivity in HTM films with low series resistance, fast hole extraction, and lower interfacial charge recombination. Moreover, the spiro‐OMeTAD(TFSI)2‐doped devices show improved stability, benefitting from well‐retained HTM morphology without forming aggregates or voids when tested under an ambient atmosphere. A facile approach is presented to fabricate highly efficient PSCs by replacing LiTFSI with spiro‐OMeTAD(TFSI)2. Furthermore, this study provides an insight into the relationship between device performance and the HTM doping level.

show abstract

Section: Resultsmentioning

confidence: 99%

“…An intense emission was observed at 765 nm for the neat perovskite. 2019, 9,1901519 more efficient charge transfer in the former. Energy Mater.…”

Section: Resultsmentioning

confidence: 99%

LiTFSI‐Free Spiro‐OMeTAD‐Based Perovskite Solar Cells with Power Conversion Efficiencies Exceeding 19%

Tan

Raga

Chesman

et al. 2019

Advanced Energy Materials

106

View full text Add to dashboard Cite

show abstract

“…[5] However, it also limits their stability against moisture and polar solvents. [5] However, it also limits their stability against moisture and polar solvents.…”

Section: The Challengesmentioning

confidence: 99%

“…Interestingly, it has been reported that the addition of Br − into MAPbI 3−x Br x increased the PCE and the resistance to humidity. [5] www.advsustainsys.com [29] Besides resistance to humidity, photostability is of particular interest.…”

Section: The Challengesmentioning

confidence: 99%

“…[5] The main advantage of using perovskite thin-film absorbers compared to organic dyes is that they present a broad absorption band from the visible to the near-infrared with a high extinction coefficient. [5] The main advantage of using perovskite thin-film absorbers compared to organic dyes is that they present a broad absorption band from the visible to the near-infrared with a high extinction coefficient.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Research Frontiers in Energy‐Related Materials and Applications for 2020–2030

Blay

Galian

Mureşan

et al. 2020

Advanced Sustainable Systems

View full text Add to dashboard Cite

structure was found for the first time in a mineral composed by CaTiO 3 in 1839. Since then, multiple metal oxide perovskites (AMO 3 ) were developed, which have interesting properties for ferroelectric, superconductive, and pyroelectric applications. Metal halide perovskites (X is a halide anion such as Cl − , Br − , or I − ), which were developed later, display promising semiconducting properties. In particular, lead halide perovskites (APbX 3 ) are the most widely studied perovskite composition and are classified according to the A cation into hybrid perovskites (methylammonium bromide, MA or formamidinium, FA) and all-inorganic perovskites (cesium, Cs). [2] The electronic properties of the perovskites are related to the M-X bond, while the size of the A cation can introduce crystal distortion and change the symmetry of the ideal cubic crystal structure. [3] Interestingly, by using a large A organic cation, low-dimensional halide perovskites can be formed, including 2D sheets, 1D chains, or 0D clusters. [4] Lead halide perovskites are revolutionizing photovoltaic technology thank to their outstanding optical and electronic properties, low cost, and simple preparation. Compared to silicon-based technology, perovskites are prepared from more abundant and low-cost precursors. The superior performance and high efficiency of perovskite-based solar cells (PSC) are due to i) high optical absorption coefficient, ii) long carrier diffusion length This article delineates the state of the art for several materials used in the harvest, conversion, and storage of energy, and analyzes the challenges to be overcome in the decade ahead for them to reach the market and benefit society. The materials covered have had a special interest in recent years and include perovskites, materials for batteries and supercapacitors, graphene, and materials for hydrogen production and storage. Looking at the common challenges for these different systems, scientists in basic research should carefully consider commercial requirements when designing new materials. These include cost and ease of synthesis, abundance of precursors, recyclability of spent devices, toxicity, and stability. Improvements in these areas deserve more attention, as they can help bridge the gap for these technologies and facilitate the creation of partnerships between academia and industry. These improvements should be pursued in parallel with the design of novel compositions, nanostructures, and devices, which have led most interest during the past decade. Research groups are encouraged to adopt a cross-disciplinary mindset, which may allow more efficient use of existing knowledge and facilitate breakthrough innovation in both basic and applied research of energy-related materials.

show abstract