2016
DOI: 10.1002/smll.201601603
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Highly Efficient p‐i‐n Perovskite Solar Cells Utilizing Novel Low‐Temperature Solution‐Processed Hole Transport Materials with Linear π‐Conjugated Structure

Abstract: Alternative low-temperature solution-processed hole-transporting materials (HTMs) without dopant are critical for highly efficient perovskite solar cells (PSCs). Here, two novel small molecule HTMs with linear π-conjugated structure, 4,4'-bis(4-(di-p-toyl)aminostyryl)biphenyl (TPASBP) and 1,4'-bis(4-(di-p-toyl)aminostyryl)benzene (TPASB), are applied as hole-transporting layer (HTL) by low-temperature (sub-100 °C) solution-processed method in p-i-n PSCs. Compared with standard poly(3,4-ethylenedioxythiophene):… Show more

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Cited by 59 publications
(40 citation statements)
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“…Li and co‐workers et al applied two novel small molecule HTMs with linear π‐conjugated structure, 4,4′‐bis(4‐(di‐p‐toyl)aminostyryl)biphenyl (TPASBP) and 1,4′‐bis(4‐(di‐p‐toyl)aminostyryl)benzene (TPASB) (Figure 2). 69 Both of them possessed high hole conductivity and could promote the growth of perovskite film consisting of large grain size and less grain boundaries. With the effective hole extraction and transport in the TPASBP‐based and TPASB‐based devices, high efficiencies of 17.4% and 17.6%, respectively, were achieved.…”
Section: Hole Transport Materialsmentioning
confidence: 99%
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“…Li and co‐workers et al applied two novel small molecule HTMs with linear π‐conjugated structure, 4,4′‐bis(4‐(di‐p‐toyl)aminostyryl)biphenyl (TPASBP) and 1,4′‐bis(4‐(di‐p‐toyl)aminostyryl)benzene (TPASB) (Figure 2). 69 Both of them possessed high hole conductivity and could promote the growth of perovskite film consisting of large grain size and less grain boundaries. With the effective hole extraction and transport in the TPASBP‐based and TPASB‐based devices, high efficiencies of 17.4% and 17.6%, respectively, were achieved.…”
Section: Hole Transport Materialsmentioning
confidence: 99%
“…Moreover, amine groups in perovskite precursors such as MAI can reduce the WF of PEDOT:PSS from ≈5.0 to 4.7 eV, thus lowering the maximum V oc that can be achieved in PEDOT:PSS based PSCs 69. Therefore, various new p‐type polymers are designed and synthetized.…”
Section: Hole Transport Materialsmentioning
confidence: 99%
“…[11][12][13][14] In inverted PSCs, the HTM plays an important role. [26][27][28][29][30][31][32] [a] R. Chen The HTM also affects the morphology of the perovskite layer.…”
Section: Introductionmentioning
confidence: 99%
“…Compared to inorganic and polymeric semiconductor HTMs,s mall organic molecules can providee normous benefits, including high yield, high purity,a nd tunable molecular engineering and photo-electronic properties. [26][27][28][29][30][31][32] [a] R. Chen (Figure 1c), m-MTDATA has the sufficient potential to functiona sa ne fficient HTM in inverted PSCs. Its shallow HOMO level, compared with the perovskite (À5.4 eV), provides driving force to extract holes from the perovskite layer;t he high LUMO level effectively blocks electrons from the perovskite layer to the HTM.…”
Section: Introductionmentioning
confidence: 99%
“…The time‐resolved PL measurements were conducted and shown in Figure c. The fast decay PL lifetime ( τ 1 ) can be attributed to charge transfer, and the longer PL species ( τ 2 ) is attributed to the bimolecular recombination via the light emission . The fast decay lifetime τ 1 is 0.33 ns for the C 8 ‐BTBT (150 °C) based film, shorter than 0.52, 0.54, 0.92 ns of the films respectively deposited on PEDOT:PSS, unannealed C 8 ‐BTBT and C 8 ‐BTBT (100 °C annealed), indicating fast charge transfer from perovskite to 150 °C annealed C 8 ‐BTBT.…”
Section: Resultsmentioning
confidence: 99%