title: Tuning the donor-acceptor strength of low-bandgap platinum-acetylide polymers for near-infrared photovoltaic applications.
abstract: Two near-infrared (NIR) absorbing metallopolyynes of platinum (P1 and P2) functionalized with a weakly electron-donating fluorene unit and two strong electron acceptors (viz. benzo[1,2-c:4,5-c']bis([1,2,5]thiadiazole) and [1,2,5]thiadiazolo[3,4-i]dibenzo[a,c]phenazine) were synthesized and applied for NIR photovoltaic applications. With these designed weak donor-strong acceptor electronic traits, these metallopolymers possess narrow bandgaps of 1.54 and 1.65 eV and a low HOMO level of about 5.50 eV, thus inducing a power conversion efficiency up to 1% for bulk heterojunction solar cells at the NIR wavelength.
authors: Institute of Molecular Functiol Materials, Areas of Excellence Scheme, University Grants Committee, Hong Kong, PR China.
authors: Chuanjiang
authors: C
authors: Qin
authors: Yingying
authors: Y
authors: Fu
authors: Chung-Hin
authors: CH
authors: Chui
authors: Chi-Wai
authors: CW
authors: Kan
authors: Zhiyuan
authors: Z
authors: Xie
authors: Lixiang
authors: L
authors: Wang
authors: Wai-Yeung
authors: WY
authors: Wong
mesh_terms: D011211:Electric Power Supplies; D005449:Fluorenes / Q000737:chemistry; D015394:Molecular Structure; D010984:Platinum / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D012993:Solar Energy
chemical_list: D005449:Fluorenes; D011108:Polymers; C041509:fluorene; D010984:Platinum