Results 191 to 200 of about 438,801 (242)

Molecular Engineering of Star‐Shaped Indoline Hole Transport Materials: The Influence of Planarity on the Hole Extraction and Transport Processes

Chemistry – A European Journal, 2022
AbstractAs the key properties of perovskite solar cells (PSCs), the hole extraction and transport capabilities of the hole transport material (HTM) affect the photovoltaic performance of PSCs to a considerable extent, while both capabilities can be adjusted by molecular planarity.
Yang Lv, Huanxin Guo, Fangyuan Ye, Yanxin Yi, Yongzhen Wu, Bo Liu   +5 more
openaire   +2 more sources

Electroluminescence in novel hole-transporting emissive materials

SPIE Proceedings, 2001
We have fabricated highly efficient organic light-emitting diodes (OLEDs) using novel hole-transporting emissive materials with triphenylamine moiety. The novel emissive materials have a high glass transition temperature ranging from 141 - 152 degrees Celsius, which is attributed to nonplanar molecular structure.
Shizuo Tokito, Koji Noda, Hisayoshi Fujikawa, Makoto Kimura, Kou Shimada, Yasuhiko Sawaki, Yasunori Taga   +6 more
openaire   +1 more source

Synthesis and Characterization of Hole-transport Materials in Polysiloxane

Molecular Crystals and Liquid Crystals, 2002
Triphenylamine(TPA) substituted polysiloxane was synthesized as the hole-transporting material. Field dependence of the hole mobility and photoconductivity were measured using the time-of flight and simple DC photocurrent measurement, respectively. We demonstrated that the film of polysiloxane with pendant TPA units higher hole mobility (3.2×10 −5 cm 2
Woong Sang Jahng, Jai Kyeong Kim, Ki Hong Park, Nakjoong Kim, Chul Joo Lee   +4 more
openaire   +1 more source

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

Journal of Materials Chemistry A, 2019
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.
Bin Cai, Xichuan Yang, Xiaoqing Jiang, Ze Yu, A. Hagfeldt, Licheng Sun   +5 more
semanticscholar   +1 more source

A novel inorganic hole-transporting material of CuInS2 for perovskite solar cells with high efficiency and improved stability

, 2019
Perovskite solar cells (PSCs) have attracted more attentions in recent decade, and the power conversion efficiency (PCE) has reached 24.2%. While some issues such as cost and stability must be solved for commercialization.
Yanyan Liu, Zhenlong Zhang, Huiping Gao, Huafang Zhang, Y. Mao   +4 more
semanticscholar   +1 more source

Simulation of perovskite solar cell with graphene as hole transporting material

DAE SOLID STATE PHYSICS SYMPOSIUM 2018, 2019
The methyl ammonium lead halide (MAPbI3) based perovskite solar cells have been studied recently because of their high efficiency along with low cost. The designing of perovskite solar cells (PSCs) requires using efficient hole transporting material and ...
Gagandeep, Mukhtiyar Singh, Ramesh Kumar
semanticscholar   +1 more source

New hole transporting materials for planar perovskite solar cells

Chemical Communications, 2018
Two HTMs with triphenylamine and carbazole moieties for planar perovskite solar cells are designed, exhibiting 18.2% power conversion efficiency and better stability.
Dongmei Li, Jiang-Yang Shao, Yiming Li, Yusheng Li, Li-Ye Deng, Yu-Wu Zhong, Qingbo Meng   +6 more
openaire   +2 more sources

Poly(carbazole phosphonic acid) as a versatile hole-transporting material for p-i-n perovskite solar cells and modules

Joule, 2023
Zhijun Ren, Zewei Cui, Xiaoyu Shi, Lingyuan Wang, Yunjie Dou, Feifei Wang, Haoran Lin, He Yan, Shangshang Chen   +8 more
semanticscholar   +1 more source

Hole transporting materials for perovskite solar cells: a chemical approach

Chemical Society Reviews, 2018
In this review, the contribution of chemistry towards producing new and innovative hole-transporting materials for highly efficient perovskite solar cells is presented in a rational and systematic manner.
Javier Urieta-Mora, Inés García-Benito, Agustín Molina-Ontoria, Nazario Martín   +3 more
openaire   +2 more sources

Simultaneous electron/hole transport in photorefractive materials

Journal of Applied Physics, 1986
The steady-state space-charge field and the response time of a photorefractive material illuminated with a sinusoidal interference pattern are derived for two models in which both electron and hole transport are important. In the first model in which electrons and holes are produced from a single set of recombination centers, the sign of the steady ...
openaire   +1 more source