Lessons Learned: From Dye‐Sensitized Solar Cells to All‐Solid‐State Hybrid Devices

Docampo, Pablo; Guldin, Stefan; Leijtens, Tomas; Noel, Nakita K.; Steiner, Ullrich; Snaith, Henry J.

doi:10.1002/adma.201400486

Cited by 157 publications

(128 citation statements)

References 264 publications

(471 reference statements)

Supporting

Mentioning

128

Contrasting

Order By: Relevance

“…[1][2][3][4][5][6][7] This emerging photovoltaic technology has been regarded as a promising path to cost-effective solar cells. [8][9][10][11][12][13][14][15][16][17][18][19] Typically, perovskite solar cells are fabricated with a mesoscopic or planar heterojunction active layer. In mesoscopic devices, the perovskite is deposited onto a microporous scaffold (e.g., titanium dioxide (TiO 2 ), zinc oxide (ZnO), aluminum oxide (Al 2 O 3 )).…”

Section: Introductionmentioning

confidence: 99%

Understanding Interface Engineering for High‐Performance Fullerene/Perovskite Planar Heterojunction Solar Cells

Liu

Bag

Renna

et al. 2015

Advanced Energy Materials

191

150

View full text Add to dashboard Cite

low exciton binding energy [ 20,21 ] and long carrier diffusion length, [21][22][23] metal halide perovskites with organic counterions have enabled both mesoscopic and planar solar cells to achieve power conversion effi ciencies (PCEs) >18%, [24][25][26][27][28][29] with state-of-theart mesocopic devices reaching a certifi ed PCE of 20.1%. [ 27 ] To date, perovskite solar cells with planar heterojunction structures are slightly less effi cient than their mesoscopic counterparts, but their fabrication is straightforward and compatible with well-established solution-based low temperature fabrication roll-to-roll procedures used for the production of polymer solar cells. [24][25][26][27] The incorporation of charge selective transport layers at the electrode/active layer junctions has often been regarded as a prerequisite to realize effi cient charge extraction in planar perovskite solar cells. [ 30 ] Thus, great effort has been focused on the development and understanding of interfacial engineering between perovskite and electron transport layers (ETLs) or hole transport layers (HTLs) for effective charge carrier separation. [31][32][33][34][35] In perovskite solar cells, the diffusion length of electrons is shorter than holes and it is regarded as a major limitation associated with these devices. [ 36,37 ] To address this limitation, compact semiconducting metal oxide (e.g., ZnO, TiO 2 ) ETLs have been used to facilitate electron transport in planar heterojunction devices. [ 2,14,38,39 ] In addition to the use of metal oxide layers, electrode work function modifi cation by an interlayer can further improve the performance of perovskite solar cells. [ 26,[40][41][42][43][44][45][46][47] For example, Yang et al. incorporated polyethyleneimine ethoxylated (PEIE) between indium tin oxide (ITO) electrode and TiO 2 to signifi cantly increase the PCE of planar heterojunction perovskite solar cells, identifying that reduction of ITO's work function (Φ) by PEIE, due to the presence of a negative interfacial dipole, was a leading contributor to the observed device performance improvement. [ 26 ] Phenyl-C 61 -butyric acid methyl ester (PC 61 BM) has been used as an alternative ETL to metal oxide layers in planar heterojunction devices, providing more effi cient charge injection from perovskite, [ 25 ] while allowing for low-temperature solution processing that precludes ITO's use as an electron-extracting electrode. [ 25,48,49 ] In addition, the deposition of PC 61 BM on perovskite fi lm [ 50 ] or making perovskite-PC 61 BM hybrid active layer [ 51 ] is effective to passivate charge trap states and defects Interface engineering is critical for achieving effi cient solar cells, yet a comprehensive understanding of the interface between a metal electrode and electron transport layer (ETL) is lacking. Here, a signifi cant power conversion effi ciency (PCE) improvement of fullerene/perovskite planar heterojunction solar cells from 7.5% to 15.5% is shown by inserting a fulleropyrrolidine interlayer between the silver electrode an...

show abstract

Section: Introductionmentioning

confidence: 99%

Understanding Interface Engineering for High‐Performance Fullerene/Perovskite Planar Heterojunction Solar Cells

Liu

Bag

Renna

et al. 2015

Advanced Energy Materials

191

150

View full text Add to dashboard Cite

show abstract

“…There are some inherent limitations of liquid electrolytes, associated with leakage, corrosiveness and volatility, which pose a major challenge in the mass production of DSSCs. In this regard, the development of solid hole-transporting materials (HTM) towards the preparation of all-solid-state hybrid devices (ss-DSSCs) 107 has attracted vivid interest. In ss-DSSCs, hole transfer occurs directly from the oxidized dye to the HOMO of the HTM, which then transports the charge to the counterelectrode.…”

Section: Liquid Electrolytes Versus Solid Hole Transporting Materialsmentioning

confidence: 99%

New generation solar cells: concepts, trends and perspectives

2015

View full text Add to dashboard Cite

Organic, dye-sensitized and perovskite solar cell technologies have triggered widespread interest in recent years due to their very promising potential towards a high solar electricity future. A number of important milestones have marked the roadmap of each sector on the way to today's outstanding performances, but there still remains plenty of scope for further improvement. The most influential landmarks, together with basic concepts and future perspectives are unraveled in this review.

show abstract

“…Dye-sensitized solar cells (DSSCs) have a fundamentally different working principle, where charge generation takes place at the materials interface. This means that processing under vacuum, ultrahigh temperatures or the use of clean room facilities are not required 1 . Therefore they are seen as a potentially low cost alternative; however up-scaling from small laboratory test cells into large prototypes for industrial manufacturing involves overcoming several issues including the rapid patterning of substrates.…”

Section: Introductionmentioning

confidence: 99%

“…The injected electrons travel through the metal oxide particles and reach the transparent conductive electrode. When a load is connected, the electrons move to the counter electrode through the external circuit and are finally reunited with their counter charges through the redox couple present in the electrolyte 1 . The nano-structured metal oxide layer within DSSCs plays a critical role in the overall performance of the cell, with material choice, processing methods and nature of the structure all having influencing factors [5][6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

“…One of the most important requirements for the photoanode is that it needs to have an extremely large surface area. This is achieved through the deposition of nanoparticle materials, commonly TiO 2 1,11 . This has been fabricated by countless different processes, however wet coating techniques such as screen-printing and doctor-blading, are still the most popular approach 9,12,13 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Digital Printing of Titanium Dioxide for Dye Sensitized Solar Cells

Cherrington

Wood

Salaoru

et al. 2016

JoVE

View full text Add to dashboard Cite

Silicon solar cell manufacturing is an expensive and high energy consuming process. In contrast, dye sensitized solar cell production is less environmentally damaging with lower processing temperatures presenting a viable and low cost alternative to conventional production. This paper further enhances these environmental credentials by evaluating the digital printing and therefore additive production route for these cells. This is achieved here by investigating the formation and performance of a metal oxide photoelectrode using nanoparticle sized titanium dioxide. An ink-jettable material was formulated, characterized and printed with a piezoelectric inkjet head to produce a 2.6 µm thick layer. The resultant printed layer was fabricated into a functioning cell with an active area of 0.25 cm 2 and a power conversion efficiency of 3.5%. The binder-free formulation resulted in a reduced processing temperature of 250 °C, compatible with flexible polyamide substrates which are stable up to temperatures of 350 ˚C. The authors are continuing to develop this process route by investigating inkjet printing of other layers within dye sensitized solar cells. Video LinkThe video component of this article can be found at

show abstract

Lessons Learned: From Dye‐Sensitized Solar Cells to All‐Solid‐State Hybrid Devices

Cited by 157 publications

References 264 publications

Understanding Interface Engineering for High‐Performance Fullerene/Perovskite Planar Heterojunction Solar Cells

Understanding Interface Engineering for High‐Performance Fullerene/Perovskite Planar Heterojunction Solar Cells

New generation solar cells: concepts, trends and perspectives

Digital Printing of Titanium Dioxide for Dye Sensitized Solar Cells

Contact Info

Product

Resources

About