Dopant-Free Tetrakis-Triphenylamine Hole Transporting Material for Efficient Tin-Based Perovskite Solar Cells

Ke, Weijun; Priyanka, Pragya; Vegiraju, Sureshraju; Stoumpos, Constantinos C.; Spanopoulos, Ioannis; Soe, Chan Myae Myae; Marks, Tobin J.; Chen, Ming Chou; Kanatzidis, Mercouri G.

doi:10.1021/jacs.7b10898

Cited by 167 publications

(113 citation statements)

References 53 publications

Supporting

Mentioning

113

Contrasting

Order By: Relevance

“…The {en}MASnI 3 solar cells with regular mesoporous structure achieved a record efficiency of 6.63%. In our later study, we made {en}FASnI 3 solar cells with the same structure but used a dopant‐free tetrakis‐triphenylamine (TPE) as the HTL . Compared with the doped spiro‐OMeTAD and PTAA, the TPE HTL without dopant can still have high hole mobility and suitable highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO).…”

Section: Performance Of Sn‐based Perovskite Solar Cellsmentioning

confidence: 99%

“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells

2018

Self Cite

View full text Add to dashboard Cite

The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201803230.The tremendous interest focused on organic-inorganic halide perovskites since 2012 derives from their unique optical and electrical properties, which make them excellent photovoltaic materials. Pb-based halide perovskite solar cells, in particular, currently stand at a record efficiency of ≈23%, fulfilling their potential toward commercialization. However, because of the toxicity concerns of Pb-based perovskite solar cells, their market prospects are hindered. In principle, Pb can be replaced with other less-toxic, environmentally benign metals. Sn-based perovskites are thus the far most promising alternative due to their very similar and perhaps even superior semiconductor characteristics. After years of effort invested in Sn-based halide perovskites, sufficient breakthroughs have finally been achieved that make them the next runners up to the Pb halide perovskites. To help the reader better understand the nature of Sn-based halide perovskites, their optical and electrical properties are systematically discussed. Recent progress in Sn-based perovskite solar cells, focusing mainly on film fabrication methods and different device architectures, and highlighting roadblocks to progress and opportunities for future work are reviewed. Finally, a brief overview of mixed Sn/Pb-based systems with their anomalous yet beneficial optical trends are discussed. The current challenges and a future outlook for Sn-based perovskites are discussed.

show abstract

Section: Performance Of Sn‐based Perovskite Solar Cellsmentioning

confidence: 99%

“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells

2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the complicated synthesis procedures and low yield of Spiro‐OMeTAD make its price very expensive, triggering the researchers over the world to search for/develop efficient and low‐cost alternative HTMs. To date, many alternative HTMs constructed with different conjugated core units, such as phenothiazine, thiophene, phenoxazine, silolothiophene, triazines, and tetraphenylethene, have been reported . Benzotriazole (BTA) is a cheap and commercially available material, which has been widely used in designing sensitizers for dye‐sensitized solar cells by reason of the outstanding electron‐accepting property.…”

Section: Summary Of Optical and Electrochemical Properties Of 2fbta‐1mentioning

confidence: 99%

Fluorine‐Substituted Benzotriazole Core Building Block‐Based Highly Efficient Hole‐Transporting Materials for Mesoporous Perovskite Solar Cells

Chen

et al. 2020

Solar RRL

View full text Add to dashboard Cite

Two novel donor–accepter–donor structured hole‐transporting materials based on fluorine‐substituted benzotriazole (BTA) core building blocks (2FBTA‐1 and 2FBTA‐2) are designed and synthesized through molecular regulation. Applying these materials into perovskite solar cells, power conversion efficiencies of 7.55% and 17.94% are obtained for 2FBTA‐1 and 2FBTA‐2, respectively. The better photovoltaic performance of 2FBTA‐2 is attributed to its more suitable energy level, more planar molecular configurations, and higher hole mobility. Moreover, the devices with 2FBTA‐2 as hole transport material (HTM) show good stability in air. The results indicate that BTA is a promising building block for future HTM design.

show abstract

“…The device typically consists of ap erovskite absorber,s uch as the lead halidep erovskite CH 3 NH 3 PbI 3 ,s andwiched between an electron-transporting material( ETM) and ah ole-transporting material (HTM). [11,12] In regular-typePSCs, the ETM is typical-ly am etal oxide such as TiO 2 and SnO 2 ,o wing to their effectivenessa nd lowc ost. [13] Despite numerouse fforts to develop HTMs, [14] unfortunately,c omparably ubiquitous materials for HTMs have not yet been discovered.…”

Section: Introductionmentioning

confidence: 99%

Influence of Alkoxy Chain Length on the Properties of Two‐Dimensionally Expanded Azulene‐Core‐Based Hole‐Transporting Materials for Efficient Perovskite Solar Cells

Truong

Lee

Nakamura

et al. 2019

Chemistry A European J

View full text Add to dashboard Cite

As eries of two-dimensionally expandeda zulenecore-based p systemsh ave been synthesized with different alkyl chain lengths in the alkoxy moieties connected to the partially oxygen-bridged triarylamine skeletons. The thermal, photophysical, and electronic properties of each compound were evaluatedt od etermine the influence of the alkyl chain length on their effectiveness as hole-transporting materials (HTMs)i np erovskites olar cells (PSCs). All the synthesized molecules showedp romising material properties, including high solubility,t he formationo ff lat and amorphous films, and optimal alignment of energy levels with perovskites. In particular, the derivatives with methyl and n-butyli nt he side chains retained amorphous stability up to 233 and 159 8C, respectively.S uch short alkoxyc hains also resulted in improvede lectrical device properties. The PSC device fabricated with the HTM with n-butyl side chains showedt he best performance with ap owerc onversione fficiency of 18.9 %, whichc ompares favorably with that of spiro-OMeTAD-based PSCs (spiro-OMeTAD = 2,2',7,7'-tetrakis[N,Nbis(p-methoxyphenyl)amino]-9,9'-spirobifluorene).[a] Dr.

show abstract

Dopant-Free Tetrakis-Triphenylamine Hole Transporting Material for Efficient Tin-Based Perovskite Solar Cells

Cited by 167 publications

References 53 publications

“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells

“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells

Fluorine‐Substituted Benzotriazole Core Building Block‐Based Highly Efficient Hole‐Transporting Materials for Mesoporous Perovskite Solar Cells

Influence of Alkoxy Chain Length on the Properties of Two‐Dimensionally Expanded Azulene‐Core‐Based Hole‐Transporting Materials for Efficient Perovskite Solar Cells

Contact Info

Product

Resources

About