Kim, J. Seong, D. Kwon, H. Jin, S. Kim, H. Kim, Y. Jeong, Y. Lee, K. Kwon, S.J. Shin, M. Son, D. Kim, I.S. 2024-01-19T13:04:15Z 2024-01-19T13:04:15Z 2022-01-10 2021-12 1936-0851 https://pubs.kist.re.kr/handle/201004/116003 To harness the full potential of halide perovskite based optoelectronics, biological safety, compatibility with flexible/stretchable platforms, and operational stability must be guaranteed. Despite substantial efforts, none has come close to providing a solution that encompasses all of these requirements. To address these issues, we devise a multifunctional encapsulation scheme utilizing hydrogen bond-based self-recovering polymeric nanomaterials as an alternative for conventional glass-based encapsulation. We show that Pb in physically damaged halide perovskite solar cells can be completely contained within the self-recovering encapsulation upon submersion in a simulated rain bath, as indicated by in vitro cytotoxicity tests. In addition, self-recovering encapsulation accommodates stable device operation upon casual bending and even stretching, which is in stark contrast to conventional glass-based encapsulation schemes. We also demonstrate the concept of assembling user-defined scalable modular optoelectronics based on halide perovskite solar cells and light emitting diodes through the use of self-recovering conductive nanocomposites. Finally, long-term operational stability of over 1000 h was achieved under harsh accelerated conditions (50 °C/50% RH and 85 °C/0% RH) with the incorporation of an ultrathin atomic layer deposited TiO2 barrier underneath the multifunctional encapsulation. In light of these merits, the encapsulation scheme based on self-recovering polymeric nanomaterials is proposed as a simple, but practical solution to a multifaceted challenge in the field of halide perovskites. ？ 2021 American Chemical Society. English American Chemical Society Lead-Sealed Stretchable Underwater Perovskite-Based Optoelectronics via Self-Recovering Polymeric Nanomaterials Article 10.1021/acsnano.1c08018 1 ACS Nano, v.15, no.12, pp.20127 - 20135 ACS Nano 15 12 20127 20135 N scie scopus 000751890100123 2-s2.0-85120558181 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article SOLAR-CELLS HALIDE PEROVSKITES STABILITY PERFORMANCE EFFICIENT DESIGN HEAT flexible/stretchable platform halide perovskites lead sequestration operational stability self-recovering nanomaterials