scholarly journals Hexaazatrinaphthylene Derivatives: Efficient Electron-Transporting Materials with Tunable Energy Levels for Inverted Perovskite Solar Cells

2016 ◽  
Vol 128 (31) ◽  
pp. 9145-9149 ◽  
Author(s):  
Dongbing Zhao ◽  
Zonglong Zhu ◽  
Ming-Yu Kuo ◽  
Chu-Chen Chueh ◽  
Alex K.-Y. Jen
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Perovskite Solar Cells

scholarly journals Progress on the Synthesis and Application of CuSCN Inorganic Hole Transport Material in Perovskite Solar Cells

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2592 ◽  
Author(s):  
Funeka Matebese ◽  
Raymond Taziwa ◽  
Dorcas Mutukwa
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Cost Effective ◽  
Vital Role ◽  
Hole Transport ◽  
Recombination Processes ◽  
Short Synthesis ◽  
P Type

P-type wide bandgap semiconductor materials such as CuI, NiO, Cu2O and CuSCN are currently undergoing intense research as viable alternative hole transport materials (HTMs) to the spiro-OMeTAD in perovskite solar cells (PSCs). Despite 23.3% efficiency of PSCs, there are still a number of issues in addition to the toxicology of Pb such as instability and high-cost of the current HTM that needs to be urgently addressed. To that end, copper thiocyanate (CuSCN) HTMs in addition to robustness have high stability, high hole mobility, and suitable energy levels as compared to spiro-OMeTAD HTM. CuSCN HTM layer use affordable materials, require short synthesis routes, require simple synthetic techniques such as spin-coating and doctor-blading, thus offer a viable way of developing cost-effective PSCs. HTMs play a vital role in PSCs as they can enhance the performance of a device by reducing charge recombination processes. In this review paper, we report on the current progress of CuSCN HTMs that have been reported to date in PSCs. CuSCN HTMs have shown enhanced stability when exposed to weather elements as the solar devices retained their initial efficiency by a greater percentage. The efficiency reported to date is greater than 20% and has a potential of increasing, as well as maintaining thermal stability.

scholarly journals Switching Off Hysteresis in Perovskite Solar Cells by Fine-Tuning Energy Levels of Extraction Layers

2018 ◽  
Vol 8 (21) ◽  
pp. 1703376 ◽  
Author(s):  
Antonio Guerrero ◽  
Agustín Bou ◽  
Gebhard Matt ◽  
Osbel Almora ◽  
Thomas Heumüller ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Fine Tuning

scholarly journals Efficient Solution Processed CH3NH3PbI3 Perovskite Solar Cells with PolyTPD Hole Transport Layer

2019 ◽  
Vol 74 (8) ◽  
pp. 665-672 ◽  
Author(s):  
Julian Höcker ◽  
David Kiermasch ◽  
Philipp Rieder ◽  
Kristofer Tvingstedt ◽  
Andreas Baumann ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Coverage ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Perovskite Layer ◽  
Solvent Engineering ◽  
Highest Occupied Molecular Orbital

AbstractThe organic and hydrophobic polymer poly[N, N′-bis(4-butilphenyl)-N, N′-bis(phenyl)-benzidine] (polyTPD) represents a promising hole transport layer (HTL) for perovskite photovoltaics due to its suitable energy levels, whereby its highest occupied molecular orbital level matches well with the valence band level of methylammonium lead triiodide (CH3NH3PbI3, MAPbI3) perovskite. However, processing a perovskite layer from the solution on the surface of this organic material, is found to be difficult due to the surface properties of the latter. In this study, we evaluate efficient p-i-n type MAPbI3 perovskite solar cells employing differently processed polyTPD layers. We found that the surface coverage of the MAPbI3 perovskite layer strongly depends on the preparation method of the underlying polyTPD layer. By varying the solvents for the polyTPD precursor, its concentration, and by applying an optimised two-step perovskite deposition technique we increased both the surface coverage of the perovskite layer as well as the power conversion efficiency (PCE) of the corresponding solar cell devices. Our simple solvent-engineering approach demonstrates that no further interface modifications are needed for a successful preparation of efficient planar photovoltaic devices with PCEs in the range of 15 %–16 %.

Mechanism of biphasic charge recombination and accumulation in TiO2mesoporous structured perovskite solar cells

2016 ◽  
Vol 18 (17) ◽  
pp. 12128-12134 ◽  
Author(s):  
Hao-Yi Wang ◽  
Yi Wang ◽  
Man Yu ◽  
Jun Han ◽  
Zhi-Xin Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Charge Recombination ◽  
Recombination Process

The charge recombination process is dominated by perovskite or mesoporous TiO2owing to different charge populations at various energy levels.

Energy level-modulated non-fullerene small molecule acceptors for improved VOC and efficiency of inverted perovskite solar cells

2019 ◽  
Vol 7 (7) ◽  
pp. 3336-3343 ◽  
Author(s):  
Xiaohui Liu ◽  
Xiaodong Li ◽  
Yang Zou ◽  
He Liu ◽  
Lei Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Small Molecule ◽  
Energy Levels ◽  
Perovskite Solar Cells

The efficiency and VOC of inverted perovskite solar cells are regularly improved by non-fullerene small molecule acceptors with modulated energy levels.

scholarly journals A partially-planarised hole-transporting quart-p-phenylene for perovskite solar cells

2019 ◽  
Vol 7 (15) ◽  
pp. 4332-4335
Author(s):  
Juan P. Mora-Fuentes ◽  
Diego Cortizo-Lacalle ◽  
Silvia Collavini ◽  
Karol Strutyński ◽  
Wolfgang R. Tress ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Optimal Energy ◽  
Hole Transporting ◽  
Hole Transporting Material

Herein, we describe the synthesis of a hole transporting material based on a partially planarised quart-p-phenylene core incorporating tetraketal and diphenylamine substituents that show optimal energy levels and solubility for perovskite solar cell applications.

A–D–A-type S,N-heteropentacene-based hole transport materials for dopant-free perovskite solar cells

2015 ◽  
Vol 3 (34) ◽  
pp. 17738-17746 ◽  
Author(s):  
Christopher Steck ◽  
Marius Franckevičius ◽  
Shaik Mohammed Zakeeruddin ◽  
Amaresh Mishra ◽  
Peter Bäuerle ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Orbital Energy ◽  
Frontier Orbital ◽  
Conversion Efficiencies ◽  
Frontier Orbital Energy

Heteropentacene-based A–D–A type hole transport materials with suitable frontier orbital energy levels were synthesized and used in perovskite solar cells showing power conversion efficiencies up to 11.4%.

Magnetron sputtered ZnO electron transporting layers for high performance perovskite solar cells

2021 ◽  
Author(s):  
Haihong Niu ◽  
Cunlong Fang ◽  
Xiantao Wei ◽  
Huan Wang ◽  
Lei Wan ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Solar Cells ◽  
High Performance ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Processing Temperature ◽  
High Electrical Conductivity ◽  
Electron Transporting Layer ◽  
Charge Extraction

An ideal electron transporting layer (ETL) of perovskite solar cells (PSCs) requires resonable energy levels, high electrical conductivity and excellent charge extraction. The low processing temperature makes ZnO a promising...

Flexible semitransparent perovskite solar cells with gradient energy levels enable efficient tandems with Cu(In,Ga)Se2

Nano Energy ◽  
2020 ◽  
Vol 78 ◽  
pp. 105378 ◽  
Author(s):  
Sheng Li ◽  
Changlei Wang ◽  
Dewei Zhao ◽  
Yidan An ◽  
Yue Zhao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Gradient Energy

How to regulate energy levels and hole mobility of spiro-type hole transport materials in perovskite solar cells

2016 ◽  
Vol 18 (39) ◽  
pp. 27073-27077 ◽  
Author(s):  
Wei-Jie Chi ◽  
Ping-Ping Sun ◽  
Ze-Sheng Li
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Hole Transport

meta-Substitution is more beneficial to reduce HOMO levels compared with ortho- and para-substitution, while the hole mobility can be improved by ortho-substitution.

Sign in / Sign up

Export Citation Format

Share Document