1 research outputs found
Green Carbon Dots Illuminate Biogenic Nanohybrids toward Soft, Piezo/Photoactive, and Physically Transient Nanogenerators
Green electronics comprising degradable materials are
ideal solutions
for electronic wastes. Here, we report the construction of a soft,
piezo/photoactive, and physically transient biogenic nanogenerator.
A green luminescent, biogenic hybrid, carbon quantum dot (CQD)/cellulose
nanocrystal (CNC)/polyhydroxybutyrate (PHB) nanofiber is manufactured
with electrospinning technology. The synergy of CQD and CNC enables
the enhancement of degradability of PHB. Simultaneously, the piezoelectric
CNC makes a contribution to the piezoelectric response of the hybrid
nanofiber. The appropriate inclusion of the CQD allows the creation
of luminous, local stress concentration points that further enhance
the piezoelectric response of the hybrid nanofiber. The output voltage
and output current of the nanofibrous CQD/CNQ/PHB-based piezoelectric
nanogenerator are 6.7 and 4.4 times higher than those of the state-of-the-art
pristine PHB-based equivalent, respectively. This type of nanogenerator
is also self-adaptive to changes in external mechanical stimuli. Moreover,
the soft nanogenerator as a tactile sensor exhibits high reliability
in the real-time dynamic sensing of athletic motions. Importantly,
with a remarkable combination of piezoelectricity and photoluminescence,
the biogenic nanogenerator array demonstrates the first application
as a bimodal piezo/photo encryption alarm system. It shows great potential
in the smart home and security field. We suppose that the multiple-responsive
biogenic nanohybrids are very promising in green transient optoelectronics