Broad spectral response photosensitive organic field-effect transistors realized by the hybrid planar-bulk heterojunction composed of three molecules with complementary optical absorption

Exploration of Near-Infrared Organic Photodetectors

“…In the case of small molecules, phthalocyanines are a kind of classical material that has been widely used for NIR organic photodetectors. The absorption spectra of these molecules, such as copper phthalocyanine (CuPc), copper hexadecafluorophthalocyanine (F16CuPc), lead phthalocyanine (PbPc), , zinc phthalocyanine (ZnPc), phthalocycanine (Pc), vanadylphthalocyanine (VOPc), tin phthalocyanine (SnPc), chloroaluminum phthalocyanine (AlClPc), and octabutoxy tin naphthalocyanine dichloride (OSnNcCl 2 ), can reach NIR region. Two types of NIR photodetectors (phototransistors and photodiodes) based on phthalocyanines both have been reported.…”

“…In the case of small molecules, phthalocyanines are a kind of classical material that has been widely used for NIR organic photodetectors. The absorption spectra of these molecules, such as copper phthalocyanine (CuPc), 82 copper hexadecafluorophthalocyanine (F16CuPc), 83 lead phthalocyanine (PbPc), 64,84 zinc phthalocyanine (ZnPc), 85 phthalocycanine (Pc), 86 vanadylphthalocyanine (VOPc), 87 tin phthalocyanine (SnPc), 55 chloroaluminum phthalocyanine (AlClPc), 88 65 The spectral response ranges of the PHJ and PM−HJ devices both covered wavelengths from 300 to 1100 nm. Among them, the PHJ device showed EQE higher than 10% and D* on the order of 10 12 Jones in the wavelength region from 400 to 900 nm; this D* was among the highest detectivities reported for organic small-molecule photodiodes.…”

Facile Vertical Structure Broadband Photodetectors Enabled by Polyvinylpyrrolidone-Regulated Perovskite and Near-Infrared-Sensitive Lead Phthalocyanine

“…For broadband photodetectors, uniform photoresponsivity for all wavelengths is desired within the detection spectral window. Our research group previously proposed to use the spectral response uniformity factor ( u SR ) to describe the uniformity of optical responsivity in the wavelength range of λ a –λ b , as shown in the following formula italicR̅ ≈ 1 false( λ N − λ 1 false) ∑ i = 1 N − 1 1 2 false( R i + 1 + R i false) ( λ i + 1 − λ i ) u SR = R̅ R max ≈ 1 R max ( λ N − λ 1 ) ∑ i = 1 N − 1 1 2 false( R i + 1 + R i false) false( λ i + 1 − λ i false) <...…”

Significant Detectivity Enhancement of Broad Spectral Organic–Inorganic Hybrid Photodiodes by C60 Film as Hole-Blocking Layer

“…And core–shell heterostructures were also used in nano structures [ 23 ]. Recently, our group has also demonstrated some broad spectral organic photodetectors based on planar heterojunction or hybrid planar-bulk heterojunction [ 24 – 26 ]. In addition, organic photodetectors have the advantages of low cost, high flexibility and large-area scalability, which make organic photodetectors have special research value and broad application prospects in the traditional optoelectronic field [ 27 – 30 ].…”