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@ARTICLE{Prasoon:629249,
      author       = {Prasoon, Anupam and Dacha, Preetam and Zhang, Heng and
                      Unsal, Elif and Hambsch, Mike and Croy, Alexander and Fu,
                      Shuai and Ngan Nguyen, Nguyen and Liu, Kejun and Qi, Haoyuan
                      and Chung, Sein and Jeong, Minyoung and Gao, Lei and Kaiser,
                      Ute and Cho, Kilwon and Wang, Hai I. and Dong, Renhao and
                      Cuniberti, Gianaurelio and Bonn, Mischa and Mannsfeld,
                      Stefan and Feng, Xinliang},
      title        = {{H}igh‐{P}erformance {P}hototransistor {B}ased on a 2{D}
                      {P}olybenzimidazole {P}olymer},
      journal      = {Advanced materials},
      volume       = {37},
      number       = {33},
      issn         = {0935-9648},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {PUBDB-2025-01777},
      pages        = {2505810},
      year         = {2025},
      abstract     = {Photodetectors are fundamental components of modern
                      optoelectronics, enabling the conversion of light into
                      electrical signals. The development of high-performance
                      phototransistors necessitates materials with both high
                      charge carrier mobility and robust photoresponse. However,
                      achieving both in a single material poses challenges due to
                      inherent trade-offs. Herein, this study introduces a
                      polybenzimidazole-(1,3-diazole)-based 2D polymer (2DPBI),
                      synthesized as few-layer, crystalline films covering ≈28
                      cm2 on the water surface at room temperature, with large
                      crystalline domain sizes ranging from 110 to 140 µm2. The
                      2DPBI incorporates a π-conjugated photoresponsive porphyrin
                      motif through a 1,3-diazole linkage, exhibiting enhanced
                      π-electron delocalization, a narrow direct band gap of
                      ≈1.18 eV, a small reduced electron–hole effective mass
                      (m* = 0.171 m0), and a very high resonant absorption
                      coefficient of up to 106 cm−1. Terahertz spectroscopy
                      reveals excellent short-range charge carrier mobility of
                      ≈240 cm2 V−1 s−1. Temperature-dependent
                      photoconductivity measurements and theoretical calculations
                      confirm a band-like charge transport mechanism. Leveraging
                      these features, 2DPBI-based phototransistors demonstrate an
                      on/off ratio exceeding 108, photosensitivity of 1.08 × 107,
                      response time of 1.1 ms, and detectivity of 2.0 × 1013
                      Jones, surpassing previously reported standalone few-layer
                      2D materials and are on par with silicon photodetectors. The
                      unique characteristics of 2DPBI make it a promising
                      foundation for future optoelectronic devices.},
      cin          = {FS DOOR-User},
      ddc          = {660},
      cid          = {$I:(DE-H253)FS_DOOR-User-20241023$},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20230095
                      (I-20230095) / FC2DMOF - Development of Functional
                      Conjugated Two-Dimensional Metal-Organic Frameworks (852909)
                      / ULTIMATE - Bottom-Up generation of atomicalLy precise
                      syntheTIc 2D MATerials for high performance in energy and
                      Electronic applications – A multi-site innovative training
                      action (813036) / GRK 2861 - GRK 2861: Planare
                      Kohlenstoffgitter (491865171)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20230095 /
                      G:(EU-Grant)852909 / G:(EU-Grant)813036 /
                      G:(GEPRIS)491865171},
      experiment   = {EXP:(DE-H253)P-P08-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1002/adma.202505810},
      url          = {https://bib-pubdb1.desy.de/record/629249},
}