Imidazole core to construct dopant-free asymmetric hole-transporting material for efficient inverted perovskite solar cells

2021 ◽  
Author(s):  
Yang Cheng ◽  
Quanping Wu ◽  
Ming Luo ◽  
Haolin Wang ◽  
Song Xue ◽  
...  
Keyword(s):  
Solar Cells ◽  
Direct Contact ◽  
Bottom Electrode ◽  
Perovskite Solar Cells ◽  
Perovskite Layer ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Hole Transporting Materials

As the sandwiched hole transporting materials (HTMs) layers are in direct contact with up-coated perovskite layer and bottom electrode in p-i-n structured perovskite (i-PSCs), the film quality of HTMs determines...

scholarly journals Low cost triazatruxene hole transporting material for >20% efficiency perovskite solar cells

2019 ◽  
Vol 7 (18) ◽  
pp. 5235-5243 ◽  
Author(s):  
Arthur Connell ◽  
Zhiping Wang ◽  
Yen-Hung Lin ◽  
Peter C. Greenwood ◽  
Alan A. Wiles ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Hole Transporting Materials

Organic hole-transporting materials (HTM) have shown excellent ability in achieving high efficiency perovskite solar cells.

Hole transporting materials based on benzodithiophene and dithienopyrrole cores for efficient perovskite solar cells

2018 ◽  
Vol 6 (14) ◽  
pp. 5944-5951 ◽  
Author(s):  
R. Sandoval-Torrientes ◽  
I. Zimmermann ◽  
J. Calbo ◽  
J. Aragó ◽  
J. Santos ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Reorganization Energy ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Hole Transporting Materials

High efficiency (18.1%) perovskite solar cells are demonstrated by using a hole transporting material with very low reorganization energy (λ).

scholarly journals Powder Pressed Cuprous Iodide (CuI) as A Hole Transporting Material for Perovskite Solar Cells

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2037 ◽  
Author(s):  
Siva Uthayaraj ◽  
D. Karunarathne ◽  
G. Kumara ◽  
Thanihaichelvan Murugathas ◽  
Shivatharsiny Rasalingam ◽  
...  
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Powder Layer ◽  
Perovskite Layer ◽  
Pressing Method ◽  
Air Mass ◽  
Hole Transporting ◽  
Top Contact ◽  
Hole Transporting Material

This study focuses on employing cuprous iodide (CuI) as a hole-transporting material (HTM) in fabricating highly efficient perovskite solar cells (PSCs). The PSCs were made in air with either CuI or 2,2′,7,7′-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-OMeTAD) as HTMs. A simple and novel pressing method was employed for incorporating CuI powder layer between perovskite layer and Pt top-contact to fabricate devices with CuI, while spiro-OMeTAD was spin-coated between perovskite layer and thermally evaporated Au top-contact to fabricate devices with spiro-OMeTAD. Under illuminations of 100 mW/cm2 with an air mass (AM) 1.5 filter in air, the average short-circuit current density (JSC) of the CuI devices was over 24 mA/cm2, which is marginally higher than that of spiro-OMeTAD devices. Higher JSC of the CuI devices can be attributed to high hole-mobility of CuI that minimizes the electron-hole recombination. However, the average power conversion efficiency (PCE) of the CuI devices were lower than that of spiro-OMeTAD devices due to slightly lower open-circuit voltage (VOC) and fill factor (FF). This is probably due to surface roughness of CuI powder. However, optimized devices with solvent-free powder pressed CuI as HTM show a promising efficiency of over 8.0 % under illuminations of 1 sun (100 mW/cm2) with an air mass 1.5 filter in air, which is the highest among the reported efficiency values for PSCs fabricated in an open environment with CuI as HTM.

scholarly journals Novel Anthracene HTM Containing TIPs for Perovskite Solar Cells

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2249
Author(s):  
Sanghyun Paek
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Long Term Stability ◽  
Photovoltaic Conversion Efficiency ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Hole Transporting Materials

Recently, perovskite solar cells have been in the spotlight due to several of their advantages. Among the components of PSCs, hole transporting materials (HTMs) re the most important factors for achieving high performance and a stable device. Here, we introduce a new D–π–D type hole transporting material incorporating Tips-anthracene as a π–conjugation part and dimethoxy-triphenylamine as a donor part (which can be easily synthesized using commercially available materials). Through the measurement of various optical properties, the new HTM not only has an appropriate energy level but also has excellent hole transport capability. The device with PEH-16 has a photovoltaic conversion efficiency of 17.1% under standard one sun illumination with negligible hysteresis, which can be compared to a device using Spiro_OMeTAD under the same conditions. Ambient stability for 1200 h shown that 98% of PEH-16 device from the initial PCE was retained, indicating that the devices had good long-term stability.

scholarly journals Development of simple hole-transporting materials for perovskite solar cells

2016 ◽  
Vol 94 (4) ◽  
pp. 352-359 ◽  
Author(s):  
Andrew M. Namespetra ◽  
Arthur D. Hendsbee ◽  
Gregory C. Welch ◽  
Ian G. Hill
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Hole Transporting ◽  
Insulating Polymers ◽  
Hole Transporting Material ◽  
Surface Morphologies ◽  
Highest Occupied Molecular Orbitals ◽  
Hole Transporting Materials

Three low-cost propeller-shaped small molecules based on a triphenylamine core and the high-performance donor molecule 7,7′-[4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl]bis[6-fluoro-4-(5′-hexyl-[2,2′-bithiophen]-5-yl)benzo[c][1,2,5]thiadiazole] (DTS(FBTTh2)2) were investigated as hole-transporting materials in perovskite solar cells. Each hole-transporting material was designed with highly modular side arms, allowing for different bandgaps and thin-film properties while maintaining a consistent binding energy of the highest occupied molecular orbitals to facilitate hole extraction from the perovskite active layer. Perovskite solar cell devices were fabricated with each of the three triphenylamine-based hole-transporting materials and DTS(FBTTh2)2 and were compared to devices with 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (spiro-OMeTAD) hole-transporting layers. Each of our triphenylamine hole-transporting materials and DTS(FBTTh2)2 displayed surface morphologies that were considerably rougher than that of spiro-OMeTAD; a factor that may contribute to lower device performance. It was found that using inert, insulating polymers as additives with DTS(FBTTh2)2 reduced the surface roughness, resulting in devices with higher photocurrents.

scholarly journals Molecularly engineered thienyl-triphenylamine substituted zinc phthalocyanine as dopant free hole transporting materials in perovskite solar cells

2020 ◽  
Vol 4 (12) ◽  
pp. 6188-6195
Author(s):  
Peng Huang ◽  
Adrián Hernández ◽  
Samrana Kazim ◽  
Javier Ortiz ◽  
Ángela Sastre-Santos ◽  
...  
Keyword(s):  
Solar Cells ◽  
Chemical Stability ◽  
Perovskite Solar Cells ◽  
Zinc Phthalocyanine ◽  
Free Hole ◽  
Semiconducting Properties ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Hole Transporting Materials ◽  
Excellent Chemical

The synthesis and semiconducting properties of thienyl-triphenylamine tetrasubstituted zinc(ii) phthalocyanine and its integration as a dopant-free hole transporting material in perovskite solar cells. Competitive performance and excellent chemical stability were obtained.

Efficient perovskite solar cells enabled by large dimensional structured hole transporting materials

2021 ◽  
Author(s):  
Tai Wu ◽  
Dongyang Zhang ◽  
Yangmei Ou ◽  
Huili Ma ◽  
Anxin Sun ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Hole Transporting Materials

A large dimensional structured hole transporting material exhibits excellent photovoltaic performance in perovskite solar cells.

Enhanced performance of perovskite solar cells with P3HT hole-transporting materials via molecular p-type doping

RSC Advances ◽  
2016 ◽  
Vol 6 (110) ◽  
pp. 108888-108895 ◽  
Author(s):  
Yuchen Zhang ◽  
Mohammed Elawad ◽  
Ze Yu ◽  
Xiaoqing Jiang ◽  
Jianbo Lai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Highly Efficient ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
P Type ◽  
Hole Transporting Materials

Tetrafluoro-tetracyano-quinodimethane (F4TCNQ) was demonstrated to be an effective p-dopant for highly efficient PSCs based on P3HT as a hole-transporting material.

Achieving over 21% efficiency in inverted perovskite solar cells by fluorinating a dopant-free hole transporting material

2020 ◽  
Vol 8 (14) ◽  
pp. 6517-6523 ◽  
Author(s):  
Li Wan ◽  
Wenxiao Zhang ◽  
Sheng Fu ◽  
Lijun Chen ◽  
Yueming Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Free Hole ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Hole Transporting Materials

PFDT-COOH and PFDT-2F-COOH were developed as dopant-free hole transporting materials for inverted PSCs. The PFDT-2F-COOH device obtained a high PCE of 21.68% due to the fluorination effect.

Boron–nitrogen substituted planar cores: designing dopant-free hole-transporting materials for efficient perovskite solar cells

Nanoscale ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 4241-4248
Author(s):  
Mengyao Hao ◽  
Weijie Chi ◽  
Zesheng Li
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Perovskite Solar Cells ◽  
Binding Ability ◽  
Perovskite Layer ◽  
Free Hole ◽  
Fast Charge ◽  
Hole Transporting ◽  
Hole Transporting Materials ◽  
Boron Nitrogen

Newly developed organoboron HTMs show strong interface binding ability and fast charge transfer from the perovskite layer to the HTM layer.

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