Perovskite Solar Cells toward Eco-Friendly Printing

Eco-friendly printing is important for mass manufacturing of thin-film photovoltaic (PV) devices to preserve human safety and the environment and to reduce energy consumption and capital expense. However, it is challenging for perovskite PVs due to the lack of eco-friendly solvents for ambient fast printing. In this study, we demonstrate for the first time an eco-friendly printing concept for high-performance perovskite solar cells. Both the perovskite and charge transport layers were fabricated from eco-friendly solvents via scalable fast blade coating under ambient conditions. The perovskite dynamic crystallization during blade coating investigated using in situ grazing incidence wide-angle X-ray scattering (GIWAXS) reveals a long sol-gel window prior to phase transformation and a strong interaction between the precursors and the eco-friendly solvents. The insights enable the achievement of high quality coatings for both the perovskite and charge transport layers by controlling film formation during scalable coating. The excellent optoelectronic properties of these coatings translate to a power conversion efficiency of 18.26% for eco-friendly printed solar cells, which is on par with the conventional devices fabricated via spin coating from toxic solvents under inert atmosphere. The eco-friendly printing paradigm presented in this work paves the way for future green and high-throughput fabrication on an industrial scale for perovskite PVs.

Download Full-text

Film Formation Control for High Performance Dion–Jacobson 2D Perovskite Solar Cells

Advanced Energy Materials ◽

10.1002/aenm.202002733 ◽

2021 ◽

pp. 2002733

Author(s):

Xu Zhang ◽

Tinghuan Yang ◽

Xiaodong Ren ◽

Lu Zhang ◽

Kui Zhao ◽

...

Keyword(s):

Solar Cells ◽

Formation Control ◽

High Performance ◽

Film Formation ◽

Perovskite Solar Cells

Download Full-text

Perspective on Predominant Metal Oxide Charge Transporting Materials for High-Performance Perovskite Solar Cells

Frontiers in Materials ◽

10.3389/fmats.2021.655207 ◽

2021 ◽

Vol 8 ◽

Author(s):

Mriganka Singh ◽

Chih Wei Chu ◽

Annie Ng

Keyword(s):

Solar Cells ◽

Metal Oxide ◽

Charge Transport ◽

High Performance ◽

Collection Efficiency ◽

Perovskite Solar Cells ◽

Hole Transport ◽

Future Research ◽

Charge Collection Efficiency ◽

Oxide Charge

Nowadays, the power conversion efficiency of organometallic mixed halide perovskite solar cells (PSCs) is beyond 25%. To fabricate highly efficient and stable PSCs, the performance of metal oxide charge transport layers (CTLs) is one of the key factors. The CTLs are employed in PSCs to separate the electrons and holes generated in the perovskite active layer, suppressing the charge recombination rate so that the charge collection efficiency can be increased at their respective electrodes. In general, engineering of metal oxide electron transport layers (ETLs) is found to be dominated in the research community to boost the performance of PSCs due to the resilient features of ETLs such as excellent electronic properties, high resistance to thermal temperature and moisture, ensuring good device stability as well as their high versatility in material preparation. The metal oxide hole transport layers in PSCs are recently intensively studied. The performance of PSCs is found to be very promising by using optimized hole transport materials. This review concisely discusses the evolution of some prevalent metal oxide charge transport materials (CTMs) including TiO2, SnO2, and NiOx, which are able to yield high-performance PSCs. The article begins with introducing the development trend of PSCs using different types of CTLs, pointing out the important criteria for metal oxides being effective CTLs, and then a variety of preparation methods for CTLs as employed by the community for high-performance PSCs are discussed. Finally, the challenges and prospects for future research direction toward scalable metal oxide CTM-based PSCs are delineated.

Download Full-text

Multilayer Cascade Charge Transport Layer for High‐Performance Inverted Mesoscopic All‐Inorganic and Hybrid Wide‐Bandgap Perovskite Solar Cells

Solar RRL ◽

10.1002/solr.202000344 ◽

2020 ◽

Vol 4 (10) ◽

pp. 2000344 ◽

Cited By ~ 2

Author(s):

Yu Chen ◽

Weijian Tang ◽

Yihui Wu ◽

Ruihan Yuan ◽

Jianchao Yang ◽

...

Keyword(s):

Solar Cells ◽

Charge Transport ◽

High Performance ◽

Perovskite Solar Cells ◽

Wide Bandgap ◽

Transport Layer ◽

Charge Transport Layer

Download Full-text

High-Performance Fully Printable Perovskite Solar Cells via Blade-Coating Technique under the Ambient Condition

Advanced Energy Materials ◽

10.1002/aenm.201500328 ◽

2015 ◽

Vol 5 (13) ◽

pp. 1500328 ◽

Cited By ~ 193

Author(s):

Zhibin Yang ◽

Chu-Chen Chueh ◽

Fan Zuo ◽

Jong H. Kim ◽

Po-Wei Liang ◽

...

Keyword(s):

Solar Cells ◽

High Performance ◽

Perovskite Solar Cells ◽

Ambient Condition ◽

Coating Technique ◽

Blade Coating

Download Full-text

Reproducible perovskite solar cells using a simple solvent mediated sol−gel synthesized NiOx hole transport layer

Applied Physics Express ◽

10.35848/1882-0786/ac435d ◽

2021 ◽

Author(s):

Ersan Y. Muslih ◽

Md. Shahiduzzaman ◽

Md. Akhtaruzzaman ◽

Mohammad Ismail Hossain ◽

LiangLe Wang ◽

...

Keyword(s):

Solar Cells ◽

Nickel Oxide ◽

Sol Gel ◽

Perovskite Solar Cells ◽

Chelating Agent ◽

Hole Transport ◽

Transport Layer ◽

Hole Transport Layer ◽

Ambient Conditions ◽

Formation Reaction

Abstract Nickel oxide (NiOx) hole transport layer was made from nickel oxide powder by a simple process and non-stabilizer or chelating agent. We used ethanol as main solvent and nitric acid less than 2% as co-solvent. The formation reaction mechanism of NiOx thin film was also studied. Perovskite solar cells (PSCs) with the optimum thickness of 70 nm exhibited power conversion efficiency as high as 12.99%, which is superior to those of PSCs with their counterparts. The moisture stability of NiOx based device (non-encapsulated) remained above 70% of their initial output after 700h storage at ambient conditions.

Download Full-text