2021
DOI: 10.1021/acs.chemmater.1c01176
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Perovskite Solar Cells with Polyaniline Hole Transport Layers Surpassing a 20% Power Conversion Efficiency

Abstract: Hole transport layers (HTLs) in perovskite photovoltaics do not just play a key role in device performance; they also determine the overall flexibility, cost, and opportune tandem solar cell applications. Currently used HTLs have limited functionality and are costly. Here, we develop an efficient bifunctional and costeffective HTL based on electrochemically deposited polyaniline (PAN) decorated with dodecyl benzene sulfonic acid. We then resurface PAN with chlorine to improve HTL conductivity and to provide nu… Show more

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Cited by 44 publications
(33 citation statements)
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“…[42] The ED of organic polymers is usually referred to as electropolymerization. [43,44] A particularly interesting example is the work from Mei and coworkers, who demonstrated an efficiency above 20% exploiting an electropolymerized polyaniline (PAN) hole selective layer on FTO, in inverted architecture [45] (right sketch of Figure 2 and 3d-f ). Electropolymerization of aniline proceeds during anodic polarization in presence of an acidic species.…”
Section: Selective Contacts Edmentioning
confidence: 99%
See 1 more Smart Citation
“…[42] The ED of organic polymers is usually referred to as electropolymerization. [43,44] A particularly interesting example is the work from Mei and coworkers, who demonstrated an efficiency above 20% exploiting an electropolymerized polyaniline (PAN) hole selective layer on FTO, in inverted architecture [45] (right sketch of Figure 2 and 3d-f ). Electropolymerization of aniline proceeds during anodic polarization in presence of an acidic species.…”
Section: Selective Contacts Edmentioning
confidence: 99%
“…e) The electrical conductivity of Cl-PAN results is larger than that of DBS-PAN with the consequent increase of the PCE of the PSCs due to larger J sc , V oc, and FF (f ). Reproduced with permission [45]. Copyright 2021, American Chemical Society.…”
mentioning
confidence: 99%
“…For the most part, conjugated polymers have found numerous utilities in differen types of PV devices and architectures. These include, (1) wide use in production of organic solar cells as hole transporting layers (HTLs) [29] and donor materials [30], (2) use in elec trochemical dye-sensitized solar cells as host electrolytes [31], (3) emitters in heterojunc tion silicon solar cells in place of highly doped p-type hydrogenated amorphous silicon [32] and (4) p-type HTLs in perovskite solar cells [33]. Herein, the various synthetic tech niques of conjugated polymers are presented, including their electronic band structure and doping mechanisms, together with the application of conjugated polymers as HTLs in organic solar cells, and organic-silicon hybrid heterojunction solar cells are discussed in detail.…”
Section: Introductionmentioning
confidence: 99%
“…Yantao et al, developed an effective bifunctional and low‐cost HTL by using decoration of PANI with dodecyl benzene sulfonic acid. This HTL improved perovskite/PANI interfaces and the crystalline/photoelectric merits of the perovskite layer, which resulted in a champion PCE of 20.7% for an inverted HPSC 19 . However, the obtained PANI‐based HPSCs have demonstrated unsatisfactory long‐term stability and more explanations need to be addressed.…”
Section: Introductionmentioning
confidence: 99%
“…This HTL improved perovskite/PANI interfaces and the crystalline/photoelectric merits of the perovskite layer, which resulted in a champion PCE of 20.7% for an inverted HPSC. 19 However, the obtained PANI-based HPSCs have demonstrated unsatisfactory long-term stability and more explanations need to be addressed. As reported in the literature, a low PCE and device instability because of some major obstacles, including a high bandgap mismatch and engineering issues such as low solubility and perovskite morphology.…”
Section: Introductionmentioning
confidence: 99%