Flexible highly-effective energy harvester via crystallographic and computational control of nanointerfacial morphotropic piezoelectric thin film

Jeong, Chang Kyu; Cho, Sung Beom; Han, Jae Hyun; Park, Dae Yong; Yang, Suyoung; Park, Kwi Il; Ryu, Jungho; Sohn, Hoon; Chung, Yong‐Chae; Lee, Keon Jae

doi:10.1007/s12274-016-1304-6

Cited by 91 publications

(65 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From changing circuit resistance, a maximum instantaneous power of ∼30 µW was elicited at ∼150 MΩ. Although this matching impedance was too high to be compared with conventional electronic components, due to the high internal resistance of the IDE-type piezoelectric devices, 64 our result demonstrates that lead-free piezoceramics can replace lead-based piezoelectric energy harvesters, even for mechanically flexible manner. Furthermore, the KNN-based f-PEH produced even higher output with finger flicking (time interval of ∼4 s, approximately), up to ∼170 V and ∼5.5 µA, and operated 40 light-emitting diodes (LEDs) with diverse colors (Fig.…”

mentioning

confidence: 73%

Comprehensive biocompatibility of nontoxic and high-output flexible energy harvester using lead-free piezoceramic thin film

et al. 2017

Self Cite

View full text Add to dashboard Cite

Flexible piezoelectric energy harvesters have been regarded as an overarching candidate for achieving self-powered electronic systems for environmental sensors and biomedical devices using the self-sufficient electrical energy. In this research, we realize a flexible high-output and lead-free piezoelectric energy harvester by using the aerosol deposition method and the laser lift-off process. We also investigated the comprehensive biocompatibility of the lead-free piezoceramic device using ex-vivo ionic elusion and in vivo bioimplantation, as well as in vitro cell proliferation and histologic inspection. The fabricated LiNbO3-doped (K,Na)NbO3 (KNN) thin film-based flexible energy harvester exhibited an outstanding piezoresponse, and average output performance of an open-circuit voltage of ∼130 V and a short-circuit current of ∼1.3 μA under normal bending and release deformation, which is the best record among previously reported flexible lead-free piezoelectric energy harvesters. Although both the KNN and Pb(Zr,Ti)O3 (PZT) devices showed short-term biocompatibility in cellular and histological studies, excessive Pb toxic ions were eluted from the PZT in human serum and tap water. Moreover, the KNN-based flexible energy harvester was implanted into a porcine chest and generated up to ∼5 V and 700 nA from the heartbeat motion, comparable to the output of previously reported lead-based flexible energy harvesters. This work can compellingly serve to advance the development of piezoelectric energy harvesting for actual and practical biocompatible self-powered biomedical applications beyond restrictions of lead-based materials in long-term physiological and clinical aspects.

show abstract

mentioning

confidence: 73%

Comprehensive biocompatibility of nontoxic and high-output flexible energy harvester using lead-free piezoceramic thin film

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is well known that the nucleation events strongly depend upon the underlying interface. Crystal nucleus tends to form on the crystallographic-coherent interface due to a smaller nucleation free energy barrier [33]. Therefore, the top YBCO will be easy to nucleate and grow epitaxially on the crystal bottom YBCO and LAO.…”

Section: Discussionmentioning

confidence: 99%

Enhancement of Critical Current Density by Establishing a YBa2Cu3O7−x/LaAlO3/YBa2Cu3O7−x Quasi-Trilayer Architecture Using the Sol-Gel Method

Wang

2019

Coatings

View full text Add to dashboard Cite

We developed a solution-derived method to establish a YBa 2 Cu 3 O 7−x /LaAlO 3 /YBa 2 Cu 3 O 7−x quasi-trilayer architecture. Using the method, nano-scale pinning sites were induced into the quasi-trilayer architecture and yielded an apparent improvement in the in-field critical current density (J c ) of high-quality YBa 2 Cu 3 O 7−x (YBCO). The improvement in the in-field J c of the films was closely related to the thickness of the LaAlO 3 (LAO) interlayer. In this paper it is demonstrated that when the nominal interlayer thickness approximates 20 nm, which is slightly higher than the roughness of the YBa 2 Cu 3 O 7−x surface, the LaAlO 3 interlayer is discontinuous due to synchromesh-like growth of the LaAlO 3 layer on relatively rough YBa 2 Cu 3 O 7−x surface resulting from the mobility of the solution. Nanoscale defects, such as particles, some amorphous phases, and especially their concomitant lattice defects (such as stacking faults and plane buckling) arise in YBa 2 Cu 3 O 7−x layers. These nanoscale defects could play a role in flux pinning and thus enhancing J c . The effective non-vacuum solution to induce vortex pinning into YBa 2 Cu 3 O 7−x films could be a reference for the further design of an optimal pinning landscape for higher J c .

show abstract

“…When a piezoelectric device is deformed by an external mechanical stress, a dipole moment is changed inside the piezoelectric material, and thereby an electric charge is generated [31][32][33][34][35][36][37]. Although inorganic ceramics such as a lead zirconate titanate (PZT) or organic polymers such as polyvinylidene fluoride (PVDF) were widely used as active materials of energy harvesters, but the brittle nature and the thick thickness or the low piezoelectric coefficient caused limitations in the various applications [38][39][40][41][42][43][44]. In recent years, high-performance flexible energy harvesters based on composites or inorganic thin films were successfully developed with the advanced fabrication processes, which are suitable for diverse self-powered biomonitoring and biomedical sensors [45][46][47][48][49][50][51][52].…”

Section: Introductionmentioning

confidence: 99%

Modulation of surface physics and chemistry in triboelectric energy harvesting technologies

Lee

Kim

Park

et al. 2019

Science and Technology of Advanced Materials

Self Cite

View full text Add to dashboard Cite

Mechanical energy harvesting technology converting mechanical energy wasted in our surroundings to electrical energy has been regarded as one of the critical technologies for self-powered sensor network and Internet of Things (IoT). Although triboelectric energy harvesters based on contact electrification have attracted considerable attention due to their various advantages compared to other technologies, a further improvement of the output performance is still required for practical applications in next-generation IoT devices. In recent years, numerous studies have been carried out to enhance the output power of triboelectric energy harvesters. The previous research approaches for enhancing the triboelectric charges can be classified into three categories: i) materials type, ii) device structure, and iii) surface modification. In this review article, we focus on various mechanisms and methods through the surface modification beyond the limitations of structural parameters and materials, such as surficial texturing/patterning, functionalization, dielectric engineering, surface charge doping and 2D material processing. This perspective study is a cornerstone for establishing next-generation energy applications consisting of triboelectric energy harvesters from portable devices to power industries.

show abstract

Flexible highly-effective energy harvester via crystallographic and computational control of nanointerfacial morphotropic piezoelectric thin film

Cited by 91 publications

References 61 publications

Comprehensive biocompatibility of nontoxic and high-output flexible energy harvester using lead-free piezoceramic thin film

Comprehensive biocompatibility of nontoxic and high-output flexible energy harvester using lead-free piezoceramic thin film

Enhancement of Critical Current Density by Establishing a YBa2Cu3O7−x/LaAlO3/YBa2Cu3O7−x Quasi-Trilayer Architecture Using the Sol-Gel Method

Modulation of surface physics and chemistry in triboelectric energy harvesting technologies

Contact Info

Product

Resources

About