scholarly journals 2D Organic-Inorganic Hybrid Perovskite Light-Absorbing Layer in Solar Cells

2020 ◽  
Author(s):  
Meng Wang ◽  
Qunliang Song ◽  
Sam Zhang
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Photophysical Properties ◽  
Rapid Development ◽  
Perovskite Solar Cells ◽  
Photovoltaic Devices ◽  
Hybrid Perovskite ◽  
Absorbing Material ◽  
Absorbing Layer

With the rapid development of high-performance perovskite solar cell, its instability has become an urgent problem to be solved. 2D perovskite is considered as a potential light absorbing material for perovskite solar cells due to its excellent stability. However, the preparation of high quality 2D perovskite films suitable for photovoltaic devices remains a challenge. In this chapter, based on the structural and photophysical properties of 2D perovskite thin film materials, the latest progress in 2D perovskite cells in recent years and the strategy of controlling the film quality of 2D perovskite are summarized, which is of great significance for the further development of 2D perovskite photovoltaic devices.

Sensitivity of mixed cation/halide perovskites to evaporation kinetics of DMSO at early stage

2021 ◽  
Author(s):  
GYUMIN KIM ◽  
Eun Seo Oh ◽  
Ajay Kumar Jena ◽  
Tsutomu Miyasaka
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Early Stage ◽  
Perovskite Solar Cells ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Annealing Step ◽  
Halide Perovskites ◽  
Kinetics Of ◽  
Evaporation Kinetics

Controlling the evaporation kinetics of the perovskite precursor (EKP) during the thermal annealing step of organic–inorganic hybrid perovskite solar cells (OIHPs) is important for achieving high performance. Although regulation of...

A linear D–π–A based hole transport material for high performance rigid and flexible planar organic–inorganic hybrid perovskite solar cells

2019 ◽  
Vol 7 (43) ◽  
pp. 13440-13446 ◽  
Author(s):  
Haeun Kwon ◽  
Saripally Sudhaker Reddy ◽  
Veera Murugan Arivunithi ◽  
Hyunjung Jin ◽  
Ho-Yeol Park ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Flexible Substrates ◽  
Solution Processed ◽  
Inorganic Hybrid ◽  
New Class ◽  
Hybrid Perovskite ◽  
Enhanced Stability

A new class of HTM is designed by introducing the D–π–A approach. Dopant-free TPA-BP-OXD based solution processed planar i-PSCs on rigid and flexible substrates show PCEs of 15.46% and 12.90%, respectively, and the hysteresis is negligible with enhanced stability.

Defects and passivation in perovskite solar cells

2021 ◽  
pp. 1-18
Author(s):  
Yaobo Li ◽  
Zhaohan Li ◽  
Fangze Liu ◽  
Jing Wei
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Surface Passivation ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Film Deposition ◽  
Transport Layer ◽  
Hybrid Perovskite ◽  
High Absorption Coefficient ◽  
Charge Transport Layer

This organic-inorganic hybrid perovskite materials have attracted great attention by virtue of their high absorption coefficient, low cost and simple film deposition technique. Based on these advantages, perovskite solar cells have reached an impressive power conversion efficiency over 25%. However, the low-temperature process inevitably leads to a large number of defects in the perovskite film. These defects would exacerbate the carrier recombination, induce crystal degradation, phase transformation and seriously affect the performance of devices. Studying the defects in perovskite film is of great significance for the development of high-performance perovskite solar cells. Herein, the authors summarise the causes, distribution and features of defects, as well as their effects on the performance of perovskite solar cells. Furthermore, some defect-passivation strategies on perovskite film or the device, including grain boundary passivation, surface passivation, capping layer modification and charge transport layer passivation, are discussed, respectively. Lastly, some remaining challenges in the commercialisation of perovskite solar cells are proposed.

High-performance and high-durability perovskite photovoltaic devices prepared using ethylammonium iodide as an additive

2015 ◽  
Vol 3 (17) ◽  
pp. 9271-9277 ◽  
Author(s):  
Hsiang-Lin Hsu ◽  
Ching-Chih Chang ◽  
Chih-Ping Chen ◽  
Bing-Huang Jiang ◽  
Ru-Jong Jeng ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Photovoltaic Devices ◽  
High Durability ◽  
Perovskite Photovoltaic

Perovskite solar cells display great commercialization potential. Ethylammonium iodide (EAI) has been used as an additive for perovskite solar cells. The EAI-derived devices displayed enhanced PCEs and long term thermal stability.

scholarly journals The Progress of Additive Engineering for CH3NH3PbI3 Photo-Active Layer in the Context of Perovskite Solar Cells

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 814
Author(s):  
Mayuribala Mangrulkar ◽  
Keith J. Stevenson
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Optoelectronic Properties ◽  
Organic Additives ◽  
Absorbing Material ◽  
Wide Scale ◽  
Absorbing Layer ◽  
Materials Used ◽  
Additive Influence

Methylammonium lead triiodide (CH3NH3PbI3/MAPbI3) is the most intensively explored perovskite light-absorbing material for hybrid organic–inorganic perovskite photovoltaics due to its unique optoelectronic properties and advantages. This includes tunable bandgap, a higher absorption coefficient than conventional materials used in photovoltaics, ease of manufacturing due to solution processability, and low fabrication costs. In addition, the MAPbI3 absorber layer provides one of the highest open-circuit voltages (Voc), low Voc loss/deficit, and low exciton binding energy, resulting in better charge transport with decent charge carrier mobilities and long diffusion lengths of charge carriers, making it a suitable candidate for photovoltaic applications. Unfortunately, MAPbI3 suffers from poor photochemical stability, which is the main problem to commercialize MAPbI3-based perovskite solar cells (PSCs). However, researchers frequently adopt additive engineering to overcome the issue of poor stability. Therefore, in this review, we have classified additives as organic and inorganic additives. Organic additives are subclassified based on functional groups associated with N/O/S donor atoms; whereas, inorganic additives are subcategorized as metals and non-metal halide salts. Further, we discussed their role and mechanism in terms of improving the performance and stability of MAPbI3-based PSCs. In addition, we scrutinized the additive influence on the morphology and optoelectronic properties to gain a deeper understanding of the crosslinking mechanism into the MAPbI3 framework. Our review aims to help the research community, by providing a glance of the advancement in additive engineering for the MAPbI3 light-absorbing layer, so that new additives can be designed and experimented with to overcome stability challenges. This, in turn, might pave the way for wide scale commercial use.

scholarly journals GABr Post-Treatment for High-Performance MAPbI3 Solar Cells on Rigid Glass and Flexible Substrate

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 750
Author(s):  
Tingting Chen ◽  
Rui He ◽  
Fan Zhang ◽  
Xia Hao ◽  
Zhipeng Xuan ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Flexible Substrate ◽  
Perovskite Solar Cells ◽  
Post Treatment ◽  
Hysteresis Effect ◽  
Photoelectric Conversion Efficiency ◽  
Trap States ◽  
Photoelectric Conversion ◽  
Hybrid Perovskite

Perovskite solar cells have exhibited astonishing photoelectric conversion efficiency and have shown a promising future owing to the tunable content and outstanding optoelectrical property of hybrid perovskite. However, the devices with planar architecture still suffer from huge Voc loss and severe hysteresis effect. In this research, Guanidine hydrobromide (GABr) post-treatment is carried out to enhance the performance of MAPbI3 n-i-p planar perovskite solar cells. The detailed characterization of perovskite suggests that GABr post-treatment results in a smoother absorber layer, an obvious reduction of trap states and optimized energy level alignment. By utilizing GABr post-treatment, the Voc loss is reduced, and the hysteresis effect is alleviated effectively in MAPbI3 solar cells. As a result, solar cells based on glass substrate with efficiency exceeding 20%, Voc of 1.13 V and significantly mitigated hysteresis are fabricated successfully. Significantly, we also demonstrate the effectiveness of GABr post-treatment in flexible device, whose efficiency is enhanced from 15.77% to 17.57% mainly due to the elimination of Voc loss.

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