Large area, waterproof, air stable and cost effective efficient perovskite solar cells through modified carbon hole extraction layer

The future photovoltaic technologies based on perovskite materials are aimed to build low tech, truly economical, easily fabricated, broadly deployable, and trustworthy solar cells. Hole transport material (HTM) free perovskite solar cells (PSCs) are among the most likely architectures which hold a distinctive design and provide a simple way to produce large-area and cost-effective manufacture of PSCs. Notably, in the monolithic scheme of the HTM-free PSCs, all layers can be printed using highly reproducible and morphology-controlled methods, and this design has successfully been demonstrated for industrial-scale fabrication. In this review article, we comprehensively describe the recent advancements in the different types of mesoporous (nanostructured) and planar HTM-free PSCs. In addition, the effect of various nanostructures and mesoporous layers on their performance is discussed using the electrochemical impedance spectroscopy (EIS) technique. We bring together the different perspectives that researchers have developed to interpret and analyze the EIS data of the HTM-free PSCs. Their analysis using the EIS tool, the limitations of these studies, and the future work directions to overcome these limitations to enhance the performance of HTM-free PSCs are comprehensively considered.

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Potential challenges and approaches to develop the large area efficient monolithic perovskite solar cells (mPSCs)

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-019-02394-7 ◽

2019 ◽

Vol 30 (23) ◽

pp. 20320-20329

Author(s):

Arti Mishra ◽

Zubair Ahmad

Keyword(s):

Solar Cells ◽

Architectural Design ◽

Low Cost ◽

Perovskite Solar Cells ◽

Cost Effective ◽

Scale Production ◽

Large Area ◽

The Stability ◽

Future Direction ◽

Industrial Scale Production

Abstract The next generation technologies based on perovskite solar cells (PSCs) are targeted to develop a true low cost, low tech, widely deployable, easily manufactured and reliable photovoltaics. After the extremely fast evolution in the last few years on the laboratory-scale, PSCs power conversion efficiency (PCE) reached over 24%. However, the widespread use of PSCs requires addressing the stability and industrial scale production issues. Carbon based monolithic perovskite solar cells (mPSCs) are one of the most promising candidates for the commercialization of the PSCs. mPSCs possess a unique architectural design and pave an easy way to produce large area and cost-effective fabrication of the PSCs. In this article, recent progress in the field of mPSCs, challenges and strategies for their improvement are briefly reviewed. Also, we focus on the predominant implementations of recent techniques in the fabrication of the mPSCs to improve their performance. This review is intended to serve as a future direction guide for the scientists who are looking forward to developing more reliable, cost-effective and large area PSCs.

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Polymer Amplification to Improve Performance and Stability Towards Semi-Transparent Perovskite Solar Cells Fabrication

10.26434/chemrxiv.9741356 ◽

2019 ◽

Author(s):

Hafez Nikbakht ◽

Ahmed Esmail Shalan ◽

Manuel Salado ◽

Abbas Assadi ◽

Parviz Boroojerdian ◽

...

Keyword(s):

Solar Cells ◽

High Performance ◽

Vinylidene Fluoride ◽

Photovoltaic Performance ◽

Perovskite Solar Cells ◽

Cost Effective ◽

Spectroscopic Properties ◽

Charge Transfer Resistance ◽

Large Area ◽

Transfer Resistance

The performance of methylammonium lead triiodide (CH3NH3PbI3) based solar cells depends on its crystallization and controlled microstructure. In spite of its high performance, long-term stability is a paramount factor towards its large area fabrication and potential industrialization. Herein, we have employed poly(vinylidene fluoride−trifluoro ethylene) P(VDF-TrFE) as an additive into a low concentration based perovskite precursor solutions to control the crystallinity and microstructure. Perovskite layers of lower thickness can be derived from low precursor concentration, however it often suffers from severe voids and roughness. Introducing judicious quantities of P(VDF-TrFE) can improve the surface coverage, smoothness as well as reduces the grain boundaries in the perovskite. An array of characterization techniques were utilized to probe the structural, microstructural and spectroscopic properties. Impedance spectra suggests, the P(VDF-TrFE) can improve the carrier lifetimes and reduce the charge transfer resistance, which in turn allows to improve photovoltaic performance. For an optimized concentration of P(VDF-TrFE), the fabricated semi-transparent solar cells yielded power conversion efficiency in excess of 10%, which supersede pristine devices along with improved stability. The device architect and the fabrication technique provide an effective route to fabricate cost effective and visible-light-semi-transparent perovskite solar cells.

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Polymer Amplification to Improve Performance and Stability Towards Semi-Transparent Perovskite Solar Cells Fabrication

10.26434/chemrxiv.9741356.v1 ◽

2019 ◽

Author(s):

Hafez Nikbakht ◽

Ahmed Esmail Shalan ◽

Manuel Salado ◽

Abbas Assadi ◽

Parviz Boroojerdian ◽

...

Keyword(s):

Solar Cells ◽

High Performance ◽

Vinylidene Fluoride ◽

Photovoltaic Performance ◽

Perovskite Solar Cells ◽

Cost Effective ◽

Spectroscopic Properties ◽

Charge Transfer Resistance ◽

Large Area ◽

Transfer Resistance

The performance of methylammonium lead triiodide (CH3NH3PbI3) based solar cells depends on its crystallization and controlled microstructure. In spite of its high performance, long-term stability is a paramount factor towards its large area fabrication and potential industrialization. Herein, we have employed poly(vinylidene fluoride−trifluoro ethylene) P(VDF-TrFE) as an additive into a low concentration based perovskite precursor solutions to control the crystallinity and microstructure. Perovskite layers of lower thickness can be derived from low precursor concentration, however it often suffers from severe voids and roughness. Introducing judicious quantities of P(VDF-TrFE) can improve the surface coverage, smoothness as well as reduces the grain boundaries in the perovskite. An array of characterization techniques were utilized to probe the structural, microstructural and spectroscopic properties. Impedance spectra suggests, the P(VDF-TrFE) can improve the carrier lifetimes and reduce the charge transfer resistance, which in turn allows to improve photovoltaic performance. For an optimized concentration of P(VDF-TrFE), the fabricated semi-transparent solar cells yielded power conversion efficiency in excess of 10%, which supersede pristine devices along with improved stability. The device architect and the fabrication technique provide an effective route to fabricate cost effective and visible-light-semi-transparent perovskite solar cells.

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