Solution-processed photodetectors based on organic–inorganic hybrid perovskite and nanocrystalline graphite

We present here solution-processed photodetectors based on a methyl ammonium lead iodide perovskite (MAPbI3) and nanocrystalline graphite (NCG) hybrid composite. The highest responsivity of the best MAPbI3/NCG photodetector was 795 mA W(-1) at 500 nm visible light, which is almost twice as high as that of the NCG-free MAPbI3 photodetector (408 mA W(-1)). The enhanced performance of the MAPbI3/NCG photodetector arises from the improved charge extraction at the MAPbI3/NCG interface. The dependence of photodetector performance on the mass percentage of NCG (the ratio of NCG to MAPbI3) in the hybrid materials is also reported here, and is correlated to the fabrication process. Moreover, by comparing the responsivity of the devices with different channel lengths, we show that the performance of hybrid photodetectors can be further tuned by tailoring the channel length.

[1]  M. Grätzel,et al.  Title: Long-Range Balanced Electron and Hole Transport Lengths in Organic-Inorganic CH3NH3PbI3 , 2017 .

[2]  Dawei Di,et al.  Efficient light-emitting diodes based on nanocrystalline perovskite in a dielectric polymer matrix. , 2015, Nano letters.

[3]  Caiyun Chen,et al.  Hybrid Graphene–Perovskite Phototransistors with Ultrahigh Responsivity and Gain , 2015 .

[4]  Nripan Mathews,et al.  Low-temperature solution-processed wavelength-tunable perovskites for lasing. , 2014, Nature materials.

[5]  Sandeep Kumar Pathak,et al.  High Photoluminescence Efficiency and Optically Pumped Lasing in Solution-Processed Mixed Halide Perovskite Semiconductors. , 2014, The journal of physical chemistry letters.

[6]  Microengineered CH3NH3PbI3 Nanowire/Graphene Phototransistor for Low-Intensity Light Detection at Room Temperature. , 2015, Small.

[7]  P. Yang,et al.  Growth and Anion Exchange Conversion of CH3NH3PbX3 Nanorod Arrays for Light-Emitting Diodes. , 2015, Nano letters.

[8]  B. Liu,et al.  High‐Performance Organic‐Inorganic Hybrid Photodetectors Based on P3HT:CdSe Nanowire Heterojunctions on Rigid and Flexible Substrates , 2013 .

[9]  Michael Grätzel,et al.  The Significance of Ion Conduction in a Hybrid Organic-Inorganic Lead-Iodide-Based Perovskite Photosensitizer. , 2015, Angewandte Chemie.

[10]  P. Ferro,et al.  Preparation and transport properties of hybrid organic–inorganic CH3NH3SnBr3 films , 2006 .

[11]  Gu-ling Zhang,et al.  Characterization of diamond-like carbon films by SEM, XRD and Raman spectroscopy , 2010 .

[12]  Jun-Seok Yeo,et al.  Planar heterojunction perovskite solar cells with superior reproducibility , 2014, Scientific Reports.

[13]  Ivan Mora-Sero,et al.  Bright Visible-Infrared Light Emitting Diodes Based on Hybrid Halide Perovskite with Spiro-OMeTAD as a Hole-Injecting Layer. , 2015, The journal of physical chemistry letters.

[14]  Yi Xie,et al.  High‐Performance Flexible Broadband Photodetector Based on Organolead Halide Perovskite , 2014 .

[15]  Minhong He,et al.  Chemical decoration of CH3NH3PbI3 perovskites with graphene oxides for photodetector applications. , 2015, Chemical communications.

[16]  Xing Huang,et al.  Shape-controlled synthesis of organolead halide perovskite nanocrystals and their tunable optical absorption , 2014 .

[17]  M. Johnston,et al.  Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells , 2014 .

[18]  Tze Chien Sum,et al.  Vapor Phase Synthesis of Organometal Halide Perovskite Nanowires for Tunable Room-Temperature Nanolasers. , 2015, Nano letters.

[19]  A. Karim,et al.  Ultrasensitive solution-processed perovskite hybrid photodetectors , 2015 .

[20]  S. Logan,et al.  The Origin and Status of the Arrhenius Equation , 1982 .

[21]  Aron Walsh,et al.  Ionic transport in hybrid lead iodide perovskite solar cells , 2015, Nature Communications.

[22]  Oleksandr Voznyy,et al.  A charge-orbital balance picture of doping in colloidal quantum dot solids. , 2012, ACS nano.

[23]  E. Sargent,et al.  Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals , 2015, Science.

[24]  Liduo Wang,et al.  Hystersis mechanism in perovskite photovoltaic devices and its potential application for multi-bit memory devices , 2015 .

[25]  Henry J. Snaith,et al.  Role of the crystallization substrate on the photoluminescence properties of organo-lead mixed halides perovskites , 2014 .

[26]  Laura M. Herz,et al.  Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber , 2013, Science.

[27]  A. Heeger,et al.  Ultrasensitive solution-processed broad-band photodetectors using CH₃NH₃PbI₃ perovskite hybrids and PbS quantum dots as light harvesters. , 2015, Nanoscale.

[28]  C. Brabec,et al.  Detection of X-ray photons by solution-processed lead halide perovskites , 2015, Nature Photonics.

[29]  Yang Yang,et al.  Solution-processed hybrid perovskite photodetectors with high detectivity , 2014, Nature Communications.

[30]  M. White,et al.  Alkylammonium lead halides. Part 2. CH3NH3PbX3 (X = Cl, Br, I) perovskites: cuboctahedral halide cages with isotropic cation reorientation , 1990 .

[31]  Laura M Herz,et al.  High Charge Carrier Mobilities and Lifetimes in Organolead Trihalide Perovskites , 2013, Advanced materials.

[32]  H. Snaith,et al.  Low-temperature processed meso-superstructured to thin-film perovskite solar cells , 2013 .

[33]  Michael Graetzel,et al.  A power pack based on organometallic perovskite solar cell and supercapacitor. , 2015, ACS nano.

[34]  Jong-Hyun Ahn,et al.  High‐Performance Perovskite–Graphene Hybrid Photodetector , 2015, Advanced materials.

[35]  E. Sargent,et al.  Colloidal Quantum-Dot Photodetectors Exploiting Multiexciton Generation , 2009, Science.

[36]  J. Teuscher,et al.  Unravelling the mechanism of photoinduced charge transfer processes in lead iodide perovskite solar cells , 2014, Nature Photonics.

[37]  Bing Li,et al.  Flexible and Semitransparent Organolead Triiodide Perovskite Network Photodetector Arrays with High Stability. , 2015, Nano letters.