Asset Details
Do you wish to reserve the book?
Flexible perovskite photodetector with room‐temperature self‐healing capability without external trigger
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Flexible perovskite photodetector with room‐temperature self‐healing capability without external trigger
Do you wish to request the book?
Flexible perovskite photodetector with room‐temperature self‐healing capability without external trigger
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Flexible perovskite photodetector with room‐temperature self‐healing capability without external trigger
2024
Overview
Flexible perovskite photodetectors (FPDs) are promising for novel wearable devices in bionics, robotics and health care. However, their performance degradation and instability during operations remain a grand challenge. Superior flexibility and spontaneous functional repair of devices without the need for any external drive or intervention are ideal goals for FPDs. Herein, by using phenyl disulfide instead of alkyl disulfide as a crosslinking agent, disulfide bonds with lower bond energy are introduced, thus endowing the polyurethane network (SCPU) with the ability of self‐healing at room temperature. SCPU is filled to the grain boundary of perovskite film, which not only improves the crystal quality of perovskite and mechanical stability of FPD but also enables FPD to self‐heal at room temperature. As a result, the as‐prepared FPD exhibits a superior responsivity of 0.4 A W−1, a high specific detectivity of 2.5 × 1011 Jones and 2 μs fast response time in a self‐powered mode. More importantly, the FPD still retained 91% of the initial photo responsivity after 9000 times of bending upon cyclic healing. This polymer doping strategy provides an effective solution for stable operation and room‐temperature self‐healing for FPDs. Benzene rings can lower the recombination temperature of self‐healing groups in SCPU, achieving self‐healing at room temperature. When added to the flexible perovskite photodetector, the chemical bond crosslinking network in the SCPU can endow the device with self‐healing effect. The device still retained 91% of the initial photo responsivity after 9000 times of bending upon cyclic healing.
