Interlayers for non-fullerene based polymer solar cells: distinctive features and challenges

Sorrentino, R.; Kozma, Erika; Luzzati, Silvia; Pò, Riccardo

doi:10.1039/d0ee02503h

Cited by 175 publications

(176 citation statements)

References 267 publications

Supporting

Mentioning

176

Contrasting

Order By: Relevance

“…[64][65][66][67] Furthermore, as recently reported, optimizing the device architecture through the introduction of organic electron transport layers (ETLs) could be a goal to realize highly efficient NF-SM OSCs. 68…”

Section: Photovoltaic Propertiesmentioning

confidence: 99%

Push–pull thiophene-based small molecules with donor and acceptor units of varying strength for photovoltaic application: beyond P3HT and PCBM

et al. 2021

View full text Add to dashboard Cite

show abstract

Section: Photovoltaic Propertiesmentioning

confidence: 99%

Push–pull thiophene-based small molecules with donor and acceptor units of varying strength for photovoltaic application: beyond P3HT and PCBM

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Note that numerous electron transporting layers (ETLs) have been developed for high performance OSCs, but the development on hole transporting layers (HTLs) still lack far behind [6] . The overwhelming majority of high performance OSCs reported in most cases are based on the conventional device structure using polyethylenedioxythiophene:polystyrene sulfonate (PEDOT:PSS) as the HTL [2, 5a] . PEDOT:PSS has attracted long‐standing spotlight owing to its good transparency, mechanical durability, solution processability and compatible with a diverse range of photoactive layers [4a, 7] .…”

Section: Introductionmentioning

confidence: 99%

18.77 % Efficiency Organic Solar Cells Promoted by Aqueous Solution Processed Cobalt(II) Acetate Hole Transporting Layer

et al. 2021

View full text Add to dashboard Cite

A robust hole transporting layer (HTL), using the cost‐effective Cobalt(II) acetate tetrahydrate (Co(OAc)2⋅4 H2O) as the precursor, was simply processed from its aqueous solution followed by thermal annealing (TA) and UV‐ozone (UVO) treatments. The TA treatment induced the loss of crystal water followed by oxidization of Co(OAc)2⋅4 H2O precursor, which increased the work function. However, TA treatment differently realize a high work function and ideal morphology for charge extraction. The resulting problems could be circumvented easily by additional UVO treatment, which also enhanced the conductivity and lowered the resistance for charge transport. The optimal condition was found to be a low temperature TA (150 °C) followed by simple UVO, where the crystal water in Co(OAc)2⋅4 H2O was removed fully and the HTL surface was anchored by substantial hydroxy groups. Using PM6 as the polymer donor and L8‐BO as the electron acceptor, a record high PCE of 18.77 % of the binary blend OSCs was achieved, higher than the common PEDOT:PSS‐based solar cell devices (18.02 %).

show abstract

“…[5][6][7] Apart from the development of acceptors, interface engineering upon electrodes, that is, developing hole/electron transporting materials (HTMs/ETMs), is also a most effective strategy to further enhance the performance of OSCs to a new level. [16][17][18][19][20][21][22][23][24][25][26][27] As for ETM development, multiple types of materials including metal oxides, small-molecule organic compounds, and nonconjugated/conjugated polymers endowed high performance for OSCs. [28][29][30] In sharp contrast, the development of HTMs is comparatively lagging behind.…”

Section: Introductionmentioning

confidence: 99%

Eliminating the Detrimental Effect of Secondary Doping on PEDOT : PSS Hole Transporting Material Performance

Wang

et al. 2021

ChemSusChem

View full text Add to dashboard Cite

Secondary doping has a long history of use in conductivity enhancement in poly (3,4-ethylenedioxythiophene) : poly(styrene sulfonate) (PEDOT : PSS). However, very little research has addressed its detrimental effect on application performance of PEDOT : PSS in organic solar cells. Herein, it was shown that the uneven drying of secondary dopant-water mixture results in a nonuniform/continuous film structure, causing severe damage to the device efficiencies (dropping about 8 and 23 % for poly [(2,6-(4,8-bis(5-(2-ethylhexyl) and poly[(2,6-(4,8-bis(5-(2) cells, respectively) and thermal stabilities. Moreover, a simple yet robust dialysis treatment was proposed to solve the issue of noncontinuity and retain the secondary doping's advantages of quinoid structure simultaneously, thus demonstrating a significant enhancement in device performance. This study will be of great importance to the future exploration of the next generation of post-treatment strategy.

show abstract

Interlayers for non-fullerene based polymer solar cells: distinctive features and challenges

Abstract: The interlayer materials used in non-fullerene based solar cells are reviewed and the peculiar mechanisms operating in these systems are discussed.

Cited by 175 publications

References 267 publications

Push–pull thiophene-based small molecules with donor and acceptor units of varying strength for photovoltaic application: beyond P3HT and PCBM

Push–pull thiophene-based small molecules with donor and acceptor units of varying strength for photovoltaic application: beyond P3HT and PCBM

18.77 % Efficiency Organic Solar Cells Promoted by Aqueous Solution Processed Cobalt(II) Acetate Hole Transporting Layer

Eliminating the Detrimental Effect of Secondary Doping on PEDOT : PSS Hole Transporting Material Performance

Contact Info

Product

Resources

About