Thiophene and diketopyrrolopyrrole based conjugated polymers as efficient alternatives to spiro-OMeTAD in perovskite solar cells as hole transporting layers

2017 ◽  
Vol 5 (21) ◽  
pp. 5193-5198 ◽  
Author(s):  
Shih-Hao Peng ◽  
Tzu-Wei Huang ◽  
Ganesh Gollavelli ◽  
Chain-Shu Hsu
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Perovskite Solar Cells ◽  
Hole Transporting

PQT, PBTTT, PDQT and PDBT-co-TT were used to replace spiro-OMeTAD as efficient hole transporting layers in perovskite solar cells.

Efficient and UV-stable perovskite solar cells enabled by side chain-engineered polymeric hole-transporting layers

2018 ◽  
Vol 6 (27) ◽  
pp. 12999-13004 ◽  
Author(s):  
Chang-Hung Tsai ◽  
Nan Li ◽  
Chia-Chen Lee ◽  
Hung-Chin Wu ◽  
Zonglong Zhu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Perovskite Solar Cells ◽  
Side Chain ◽  
Hole Transporting ◽  
Enhance Efficiency

Biaxially-extended octithiophene-based conjugated polymers are demonstrated as effective polymeric hole-transporting layers to simultaneously enhance efficiency and UV-photostability of perovskite solar cells.

Ladder-like conjugated polymers used as hole-transporting materials for high-efficiency perovskite solar cells

2019 ◽  
Vol 7 (24) ◽  
pp. 14473-14477 ◽  
Author(s):  
Liren Zhang ◽  
Jionghua Wu ◽  
Dongmei Li ◽  
Wenhua Li ◽  
Qingbo Meng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Conjugated Polymers ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Homo Energy ◽  
Hole Transporting ◽  
Hole Transporting Materials ◽  
Homo Energy Level

Intramolecular S–O interactions were adopted for designing HTMs with high hole mobility and a suitable HOMO energy level in PVSK.

scholarly journals Effects of 5-Ammonium Valeric Acid Iodide as Additive on Methyl Ammonium Lead Iodide Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2512
Author(s):  
Daming Zheng ◽  
Changheng Tong ◽  
Tao Zhu ◽  
Yaoguang Rong ◽  
Thierry Pauporté
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Single Crystal Silicon ◽  
Mesoporous Structure ◽  
Valeric Acid ◽  
Electrical Impedance Spectroscopy ◽  
Lead Iodide ◽  
Crystal Silicon ◽  
Time Resolved ◽  
Hole Transporting

During the past decade, the power conversion efficiency (PCE) of perovskite solar cells (PSCs) has risen rapidly, and it now approaches the record for single crystal silicon solar cells. However, these devices still suffer from a problem of stability. To improve PSC stability, two approaches have been notably developed: the use of additives and/or post-treatments that can strengthen perovskite structures and the use of a nontypical architecture where three mesoporous layers, including a porous carbon backcontact without hole transporting layer, are employed. This paper focuses on 5-ammonium valeric acid iodide (5-AVAI or AVA) as an additive in methylammonium lead iodide (MAPI). By combining scanning electron microscopy (SEM), X-ray diffraction (XRD), time-resolved photoluminescence (TRPL), current–voltage measurements, ideality factor determination, and in-depth electrical impedance spectroscopy (EIS) investigations on various layers stacks structures, we discriminated the effects of a mesoscopic scaffold and an AVA additive. The AVA additive was found to decrease the bulk defects in perovskite (PVK) and boost the PVK resistance to moisture. The triple mesoporous structure was detrimental for the defects, but it improved the stability against humidity. On standard architecture, the PCE is 16.9% with the AVA additive instead of 18.1% for the control. A high stability of TiO2/ZrO2/carbon/perovskite cells was found due to both AVA and the protection by the all-inorganic scaffold. These cells achieved a PCE of 14.4% in the present work.

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