scholarly journals A New Strategy for Constructing Dispiro-Based Dopant-Free Hole-Transporting Material: Spatial Configuration of Spiro-bifluorene Changes from Perpendicular to Parallel Arrangement

2021 ◽  
Author(s):  
Zhongquan Wan ◽  
Jinyu Yang ◽  
Jianxing Xia ◽  
Hongyu Shu ◽  
Xiaojun Yao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Spatial Configuration ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Free Hole ◽  
Parallel Arrangement ◽  
New Strategy ◽  
Hole Transporting ◽  
Hole Transporting Material

Due to the low intrinsic hole mobility caused by orthogonal conformation of two fluorene units in Spiro-OMeTAD which is a classic hole-transporting material (HTM) in perovskite solar cells (PSCs), Spiro-OMeTAD...

Boosting the power conversion efficiency of perovskite solar cells to 17.7% with an indolo[3,2-b]carbazole dopant-free hole transporting material by improving its spatial configuration

2019 ◽  
Vol 7 (24) ◽  
pp. 14835-14841 ◽  
Author(s):  
Bin Cai ◽  
Xichuan Yang ◽  
Xiaoqing Jiang ◽  
Ze Yu ◽  
Anders Hagfeldt ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Spatial Configuration ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Free Hole ◽  
Hole Transporting ◽  
Hole Transporting Material

Three-step synthesis and facile modification of an indolo[3,2-b]carbazole based dopant-free hole transporting material resulted in a power conversion efficiency of 17.7% in perovskite solar cells.

scholarly journals Polymeric Dopant-Free Hole Transporting Materials for Perovskite Solar Cells: Structures and Concepts towards Better Performances

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1652
Author(s):  
Mohamed M. H. Desoky ◽  
Matteo Bonomo ◽  
Nadia Barbero ◽  
Guido Viscardi ◽  
Claudia Barolo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Building Blocks ◽  
Free Hole ◽  
Long Term Stability ◽  
Donor And Acceptor ◽  
Hole Transporting ◽  
Hole Transporting Material

Perovskite solar cells are a hot topic of photovoltaic research, reaching, in few years, an impressive efficiency (25.5%), but their long-term stability still needs to be addressed for industrial production. One of the most sizeable reasons for instability is the doping of the Hole Transporting Material (HTM), being the salt commonly employed as a vector bringing moisture in contact with perovskite film and destroying it. With this respect, the research focused on new and stable “dopant-free” HTMs, which are inherently conductive, being able to effectively work without any addition of dopants. Notwithstanding, they show impressive efficiency and stability results. The dopant-free polymers, often made of alternated donor and acceptor cores, have properties, namely the filming ability, the molecular weight tunability, the stacking and packing peculiarities, and high hole mobility in absence of any dopant, that make them very attractive and a real innovation in the field. In this review, we tried our best to collect all the dopant-free polymeric HTMs known so far in the perovskite solar cells field, providing a brief historical introduction, followed by the classification and analysis of the polymeric structures, based on their building blocks, trying to find structure–activity relationships whenever possible. The research is still increasing and a very simple polymer (PFDT–2F–COOH) approaches PCE = 22% while some more complex ones overcome 22%, up to 22.41% (PPY2).

Star-shaped cyclopentadithiophene-based dopant-free hole-transporting material for high-performance perovskite solar cells

2021 ◽  
Author(s):  
Kun-Mu Lee ◽  
Jui-Yu Yang ◽  
Ping-Sheng Lai ◽  
Ke-Jyun Luo ◽  
Ting Yu Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Free Hole ◽  
Hole Transporting ◽  
Hole Transporting Material

A new cyclopentadithiophene (CPDT)-based organic small molecule serves as an efficient dopant-free hole transporting material (HTM) for perovskite solar cells (PSCs). Upon incorporation of two carbazole groups, the resulting CPDT-based...

A solution-processable copper(ii) phthalocyanine derivative as a dopant-free hole-transporting material for efficient and stable carbon counter electrode-based perovskite solar cells

2017 ◽  
Vol 5 (34) ◽  
pp. 17862-17866 ◽  
Author(s):  
Xiaoqing Jiang ◽  
Ze Yu ◽  
Hai-Bei Li ◽  
Yawei Zhao ◽  
Jishuang Qu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Counter Electrode ◽  
Perovskite Solar Cells ◽  
Stable Carbon ◽  
Free Hole ◽  
Hole Transporting ◽  
Solution Processable ◽  
Phthalocyanine Derivative ◽  
Hole Transporting Material

A solution-processable copper(ii) phthalocyanine derivative CuPc-TIPS has been explored as a dopant-free hole-transporting material in carbon counter electrode-based perovskite solar cells.

scholarly journals One step facile synthesis of a novel anthanthrone dye-based, dopant-free hole transporting material for efficient and stable perovskite solar cells

2018 ◽  
Vol 6 (14) ◽  
pp. 3699-3708 ◽  
Author(s):  
Hong Duc Pham ◽  
Kazuma Hayasake ◽  
Jinhyun Kim ◽  
Thu Trang Do ◽  
Hiroyuki Matsui ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Facile Synthesis ◽  
Free Hole ◽  
Hole Transporting ◽  
One Step ◽  
Hole Transporting Material

A new dopant free stable HTM using anthanthrone dye has been reported with 11.5% efficiency.

A pseudo-two-dimensional conjugated polysquaraine: an efficient p-type polymer semiconductor for organic photovoltaics and perovskite solar cells

2018 ◽  
Vol 6 (28) ◽  
pp. 13644-13651 ◽  
Author(s):  
Qi Xiao ◽  
Fei Wu ◽  
MengMeng Han ◽  
Zhen Li ◽  
LinNa Zhu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymer ◽  
Polymer Solar Cells ◽  
Perovskite Solar Cells ◽  
Two Dimensional ◽  
Free Hole ◽  
Polymer Semiconductor ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
P Type

A new squaraine-based 2D conjugated polymer was developed as the donor material in polymer solar cells and dopant-free hole transporting material in inverted perovskite solar cells, reaching efficiencies of 6.35% and 18.29%, respectively.

Fused Furan‐Based Organic Small Molecules as Dopant‐Free Hole Transporting Material for Inverted Perovskite Solar Cells

Solar RRL ◽  
2020 ◽  
Vol 4 (12) ◽  
pp. 2000536
Author(s):  
Bingyu Li ◽  
Zhipeng Li ◽  
Junfei Xing ◽  
Mingzhe Zhu ◽  
Zhongmin Zhou
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Perovskite Solar Cells ◽  
Free Hole ◽  
Hole Transporting ◽  
Hole Transporting Material
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