Photovoltaic Performance Enhancement of Perovskite Solar Cells Using Polyimide and Polyamic Acid as Additives

2019 ◽  
Vol 123 (39) ◽  
pp. 23826-23833 ◽  
Author(s):  
Yang-Yen Yu ◽  
Ching Tseng ◽  
Wei-Chen Chien ◽  
Hsiang-Lin Hsu ◽  
Chih-Ping Chen
Keyword(s):  
Solar Cells ◽  
Performance Enhancement ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Polyamic Acid

Octamethyl-substituted Pd(ii) phthalocyanine with long carrier lifetime as a dopant-free hole selective material for performance enhancement of perovskite solar cells

2017 ◽  
Vol 5 (46) ◽  
pp. 24416-24424 ◽  
Author(s):  
Xiaolu Zheng ◽  
Yulong Wang ◽  
Jiahua Hu ◽  
Guang Yang ◽  
Zhen Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Carrier Lifetime ◽  
Performance Enhancement ◽  
Diffusion Length ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Free Hole ◽  
Phthalocyanine Derivative

Replacing copper with heavier palladium (Pd) endows the phthalocyanine derivative with a longer diffusion length and better photovoltaic performance.

scholarly journals 2D materials for conducting holes from grain boundaries in perovskite solar cells

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Peng You ◽  
Guanqi Tang ◽  
Jiupeng Cao ◽  
Dong Shen ◽  
Tsz-Wai Ng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Grain Boundaries ◽  
Performance Enhancement ◽  
2D Materials ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Solution Process ◽  
High Mobility ◽  
Cost Effective ◽  
Hole Transport

AbstractGrain boundaries in organic–inorganic halide perovskite solar cells (PSCs) have been found to be detrimental to the photovoltaic performance of devices. Here, we develop a unique approach to overcome this problem by modifying the edges of perovskite grain boundaries with flakes of high-mobility two-dimensional (2D) materials via a convenient solution process. A synergistic effect between the 2D flakes and perovskite grain boundaries is observed for the first time, which can significantly enhance the performance of PSCs. We find that the 2D flakes can conduct holes from the grain boundaries to the hole transport layers in PSCs, thereby making hole channels in the grain boundaries of the devices. Hence, 2D flakes with high carrier mobilities and short distances to grain boundaries can induce a more pronounced performance enhancement of the devices. This work presents a cost-effective strategy for improving the performance of PSCs by using high-mobility 2D materials.

Interfacial engineering of self-assembled monolayer modified semi-roll-to-roll planar heterojunction perovskite solar cells on flexible substrates

2015 ◽  
Vol 3 (48) ◽  
pp. 24254-24260 ◽  
Author(s):  
Zhuowei Gu ◽  
Lijian Zuo ◽  
Thue T. Larsen-Olsen ◽  
Tao Ye ◽  
Gang Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Performance Enhancement ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Flexible Substrates ◽  
Self Assembled Monolayer ◽  
Interfacial Engineering ◽  
Roll To Roll ◽  
Self Assembled ◽  
Planar Heterojunction

A self-assembled monolayer is employed to modify the HTL in inverted perovskite solar cells, which results in significant photovoltaic performance enhancement, and can be applied on roll-to-roll fabricated flexible perovskite solar cells.

scholarly journals The Influence of the Thickness of Compact TiO2 Electron Transport Layer on the Performance of Planar CH3NH3PbI3 Perovskite Solar Cells

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3295
Author(s):  
Andrzej Sławek ◽  
Zbigniew Starowicz ◽  
Marek Lipiński
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Transport Layer ◽  
Electron Transport Layer

In recent years, lead halide perovskites have attracted considerable attention from the scientific community due to their exceptional properties and fast-growing enhancement for solar energy harvesting efficiency. One of the fundamental aspects of the architecture of perovskite-based solar cells (PSCs) is the electron transport layer (ETL), which also acts as a barrier for holes. In this work, the influence of compact TiO2 ETL on the performance of planar heterojunction solar cells based on CH3NH3PbI3 perovskite was investigated. ETLs were deposited on fluorine-doped tin oxide (FTO) substrates from a titanium diisopropoxide bis(acetylacetonate) precursor solution using the spin-coating method with changing precursor concentration and centrifugation speed. It was found that the thickness and continuity of ETLs, investigated between 0 and 124 nm, strongly affect the photovoltaic performance of PSCs, in particular short-circuit current density (JSC). Optical and topographic properties of the compact TiO2 layers were investigated as well.

scholarly journals Abnormal spatial heterogeneity governing charge-carrier mechanism in efficient Ruddlesden-Popper perovskite solar cells

2021 ◽  
Author(s):  
Jun Xi ◽  
Junseop Byeon ◽  
Unsoo Kim ◽  
Kijoon Bang ◽  
Gi Rim Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Spatial Heterogeneity ◽  
Real Time ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Carrier Mechanism

Layered Ruddlesden–Popper perovskite (RPP) photovoltaics have gained substantial attention owing to their excellent air stability. However, their photovoltaic performance is still limited by the unclear real-time charge-carrier mechanism of operating...

scholarly journals Effects of CsSnxPb1−xI3 Quantum Dots as Interfacial Layer on Photovoltaic Performance of Carbon-Based Perovskite Solar Cells

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Chi Zhang ◽  
Zhiyuan He ◽  
Xuanhui Luo ◽  
Rangwei Meng ◽  
Mengwei Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Photogenerated Electron ◽  
Depletion Region ◽  
Band Alignment ◽  
Back Surface ◽  
The One ◽  
Carbon Based

AbstractIn this work, inorganic tin-doped perovskite quantum dots (PQDs) are incorporated into carbon-based perovskite solar cells (PSCs) to improve their photovoltaic performance. On the one hand, by controlling the content of Sn2+ doping, the energy level of the tin-doped PQDs can be adjusted, to realize optimized band alignment and enhanced separation of photogenerated electron–hole pairs. On the other hand, the incorporation of tin-doped PQDs provided with a relatively high acceptor concentration due to the self-p-type doping effect is able to reduce the width of the depletion region near the back surface of the perovskite, thereby enhancing the hole extraction. Particularly, after the addition of CsSn0.2Pb0.8I3 quantum dots (QDs), improvement of the power conversion efficiency (PCE) from 12.80 to 14.22% can be obtained, in comparison with the pristine device. Moreover, the experimental results are analyzed through the simulation of the one-dimensional perovskite/tin-doped PQDs heterojunction.

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