Tsinghua University-Hongwei Zhu

朱宏伟 ZHU Hongwei 清华大学 材料学院 School of Materials Science and Engineering, Tsinghua University hongweizhutsinghua.edu.cn, 18601182155 新材料在智慧能源中的产业技术创新与应用 Innovation and Potential Applications of New Materials in Smart Energy Smart energy Energy conversion Energy storage Electronics New materials Sensing, Energy, Fuel Chimia, 2007, 61815. 可存储性 可运输性 光伏电池太阳能 →电能 光（电）催化太阳能 →化学燃料 地域性、时间性 Conduction band Valance band bandgap 可再生能源之太阳能 Sensors for IoT VR Internet of Things IoT Virtual Reality VR Visual Auditory Tactile Olfactory Gustatory Reduction in dimension Adv. Funct. Mater. 2016, 26, 2988 Reinvents our understanding of the nature of materials, and promises to have a great impact on physical sciences. 3D to 2D to 1D to 0D adsorption Multifunctional electrical charge/mass separation thermal mechanical optical flow Surfaces interfaces Graphene optoelectronics ➢ Engineering graphene and TMDs based van der Waals heterostructures for photovoltaic and photoelectrochemical solar energy conversion. Chem. Soc. Rev. 2018 ➢ Graphene and related two-dimensional materials Structure-property relationships for electronics and optoelectronics. Appl. Phys. Rev. 2017 ➢ The graphene-semiconductor Schottky junction. Phys. Today 2016 ➢ Carbon/silicon heterojunction solar cells State of the art and prospects. Adv. Mater. 2015 ➢ Applications of carbon materials in photovoltaic solar cells. Sol. Energy Mater. Sol. Cells 2009 Solar Cell Photoelectrochemical Cell 基于 MEMSNEMS Graphene-on-Sb2S3 FTO TiO2 Sb2S3 Graphene -8 -7 -6 -5 -4 -3 -2 -1 FTO e- Graphene h Sb2S3 e- TiO2 -0 .2 -0 .1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 -8 -6 -4 -2 0 2 4 J mA/c m 2 Volta ge V As deposi ted Surface sulfurizatio n 0 50 100 150 200 250 300 350 400 450 0 1 2 3 4 5 6 200  W/cm 2 at 0 bais 550nm 700nm 650nm 600nm 500nm 450nm 400nm Curr en t  A Time s Solar cell Photodetector Ultrathin nanoscale hole-selective layer 400 600 800 1000 -5 0 5 10 15 20 25 30 35 40 45 393 400424 392 421406 412 403 403 410 410 392 409 Ir ra diance  W/c m 2 /nm W avele ngt h nm 456 -2 0 2 4 6 8 10 12 14 16 W avel engt h nm P h o toC u rr e n t μ A /cm 2 V1 V 400 450 500 550 600 650 70 0 75 0 80 0 8 50 9 00 9 50 1 000 1 050 - 50 0 0 500 1000 1.528 1.530 1.532 1.534 1.536 1.538 V o lt a g e V T ime ms 180 ms 40 50 60 70 80 90 0. 0 0. 5 1. 0 1. 5 2. 0 650 nm 0. 006 A/ W 400 nm 0. 010 A/ W Ph o to c u rren t  A Inte nsity  W 900 nm 0. 002 A/ W 400 500 600 700 800 900 1000 0.00 0.01 0.02 0.03 Responsity Res p o n s it y A/ W W avele ngt h nm 0 2 4 6 8 10 EQE E QE Graphene-on-SnSe - 6. 0 - 5. 5 - 5. 0 - 4. 5 - 4. 0 - 0. 2 0. 0 E V - 5. 20 eV E F - 5. 10 eV E C - 4. 02 eV  e V E vac Sn Se 0 1 2 3 4  R / R 0 a.u. Time s C un G uan C hi R adial art ery C un G u a n Chi Pulse diagnosis Acupoints Distal Middle Proximal USB System Sensor Sensor Bluetooth System Pulse diagnosis Age Va sc ula r s tiff ne ss t P t P s P d P 1 P 2 P e r c u s s io n w a v e T id a l w a v e D ic r o tic w a v e cardiovascular non-invasive real-time acquisition Pulse diagnosis t P Ps Pd P1 P2 Percussion wave Tidal wave Dicrotic wave 10 20 30 40 50 60 70 0.0 0.2 0.4 0.6 0.8 1.0 k AI r  t DV P Chara cteristic values Age yrs AIrP2/P1 Atherosclerosis 精准把脉 0 10 20 30 40 0.0 0.5 1.0 1.5 2.0 2.5 R - R 0 / R 0 Tim e sAudio 0 5 10 15 20 25 0.0 0 0.0 4 0.0 8 R -R 0 / R 0 Tim e s 0 5 10 15 20 25 30 0.0 0 0.0 4 0.0 8 R -R 0 / R 0 Tim e s东 西 南 北 ā ǎ 0 4 8 12 16 0.0 0.2 0.4 0.6 R - R 0 / R 0 Time s Acoustic sensor Fast and low-frequency sampling by extracting the signature characteristics of sound waves 200 300 400 500 600 BGFED CA Intensity a.u. Frequency Hz D Hz D/E E Hz E/F F Hz F/G G Hz G/A A Hz A/B B Hz B/C C Hz StdPeak 293.66 329.62 349.22 391.99 440 493.88 523.2 Peak 294.6 330.3 350.7 391.8 442.5 495.3 524.1 StdRatio 1.12 1.05 1.12 1.12 1.12 1.05 Ratio 1.12 1.06 1.11 1.12 1.11 1.05 12平均律 12 2 B C D E FG A A/dB C/bD G/bA F/bG D/bE 300 400 500 600 700 FAC C A F Intensity a.u. Frequency Hz 200 450 700 950 1200 吉他 琵琶 古筝 法国号 钢琴 Intensity a.u. Frequency Hz ➢ 基本音级测试 ➢ 大三和弦测试 ➢ 乐器音色测试 乐队 “指挥” Ca2 Poly acrylic acid Graphene oxide CO32- Multifunctional graphene composites with reshaping and self-healing features via a facile biomineralization-inspired process Biomineralization-inspired graphene composites 仿生矿化 a Shaping in a fixed mold b Free shaping in multi-dimensions c Continuous shaping d 3D printing e ‘Flower’ f ‘Rope’ 1cm 1cm 1cm 1cm Strain sensing Liquids recognition PCA Electronic tongue Graphene test papers HCA -2 00 -1 50 -1 00 -5 0 0 20 40 60 80 100 120 Pine ap ple Ora ng e Gree n Tea Fanta Peps i PC 2 0 .7 PC 1 9 2.3 Water microdroplets on wrinkled graphene 100μm 100μm 100μm 100μm 0s 3s 20s 40s Dry State Just Covered Orientated Saturated Ultrafast humidity sensing Cation-π interaction-based electric generator -2 0 -1 0 0 10 20 -0 .02 -0 .01 0.0 0 0.0 1 0.0 2 Vol tage V Time s -1 6 -1 5 -1 4 -1 3 -1 2 -1 1 -0 .02 -0 .01 0.0 0 0.0 1 Vol tage V Time s 凝结溶解 蒸发析出 Cation-π interaction-based electric generator Cation-π interaction-based electric generator Smart electronics Gr ap he ne sen sors Sensitivity Strain Gauge factor Response Energy consumption Recognition Flaw detection Nano positioning Sensitive Robust Wide operating range Flexible Wearable Adaptable Multifunctional sensing VR/AR/MR Electronics Healthcare Security Precision manufacturing control Flexible electronics Internet of Things optoelectronic materials sensing materials separation materials nm μm Energy Flexible devices Environmental Nano Micro Macro structural design function creation Thank you 2019.6.4 hongweizhutsinghua.edu.cn, 18601182155