Atomic layer deposition of ZnO layers on Bi2Te3 powders: Comparison of gas fluidization and rotary reactors

Jung, Myeong Jun; Ji, Myeongjun; Han, Jeong Hwan; Lee, Young In; Oh, Sung-Tag; Lee, Min Hwan; Choi, Byung Joon

doi:10.1016/j.ceramint.2022.08.241

Cited by 5 publications

(4 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, when Bi 2 Te 3 is oxidized, oxygen atoms replace Te 2 in the quintuple layer (-Te 1 -Bi-Te 2 -Bi-Te 1 -) and act as donors to increase the n, which is the primary reason for the Seebeck coefficient to decrease. Moreover, the defects induced by oxidation would enhance carrier scattering and thus reduce the μ [124][125][126][127], which would ultimately deteriorate The TE performance. Therefore, it is important to prevent oxidation during the ED process.…”

Section: Oxidation Preventionmentioning

confidence: 99%

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Shi

Zheng

Wang

et al. 2022

International Materials Reviews

View full text Add to dashboard Cite

Thermoelectric (TE) technology enables direct conversion between thermal and electrical energies and thus has been regarded as an alternative for energy harvesting and refrigeration. Bismuth telluride (Bi 2 Te 3 ) is the most widely used TE material at room temperature due to its high figure of merit (∼1). Since the first publication on the electrodeposition of Bi 2 Te 3 films in 1994, a large number of publications has emerged in the last two decades, owing to its advantages such as simple and safe preparation, high deposition rate, convenient micromachining, good compatibility to semiconductor microfabrication techniques and so on. This article reviews the recent research progress in the electrodeposition of Bi 2 Te 3 and its application in TE devices. Additionally, an outlook towards the future development of this area has also been discussed.

show abstract

Section: Oxidation Preventionmentioning

confidence: 99%

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Shi

Zheng

Wang

et al. 2022

International Materials Reviews

View full text Add to dashboard Cite

show abstract

“…18 The increase in electron mobility in Bi 2 Te 3 powders after ZnO coating is associated with the defect passivation in the grain boundary. 19 Li et al reported that the increase in electrical conductivity in Bi 2 Te 2.7 Se 0.3 powders after ZnO coating is due to the Te precipitation in the grain boundary. 20 To improve the device performance further, the temperature-dependent carrier transport properties of metal/SnSe contacts should be thoroughly understood.…”

Section: ■ Introductionmentioning

confidence: 99%

“… 18 The increase in electron mobility in Bi 2 Te 3 powders after ZnO coating is associated with the defect passivation in the grain boundary. 19 Li et al. reported that the increase in electrical conductivity in Bi 2 Te 2.7 Se 0.3 powders after ZnO coating is due to the Te precipitation in the grain boundary.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the incorporation of ALD-grown ZnO into the Bi 0.4 Sb 1.6 Te 3 (BST) matrix has been demonstrated to effectively block the phonon propagation and tune the carrier density at the ZnO/BST heterogeneous grain boundaries . The increase in electron mobility in Bi 2 Te 3 powders after ZnO coating is associated with the defect passivation in the grain boundary . Li et al.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Schottky Contacts to ZnO-Nanocoated SnSe Powders by Atomic Layer Deposition

et al. 2022

Self Cite

View full text Add to dashboard Cite

In this study, SnSe powders are nanocoated with ZnO grown by atomic layer deposition (ALD) with different ALD ZnO pulse cycles. Subsequently, the current transport mechanisms of Pt/ZnO-coated SnSe junctions are electrically investigated. A decrease in the current and an increase in the series resistance are observed at 300 K with increasing ZnO pulse cycles (i.e., increasing the thickness of the ZnO layer). The series resistance is similar at 450 K for all samples. The difference in the barrier height for each sample is insignificant, thus indicating that the ZnO coating marginally alters the barrier height at the Pt/SnSe junction. The inhomogeneous Schottky barrier can explain both the forward and reverse bias current conduction. The lowest ideality factor observed for the SnSe sample with ZnO 100 cycles is related to the lowest standard deviation (i.e., the lowest spatial fluctuation of the barrier height). Furthermore, the electrical conductivity is comparable to that of the sample without ZnO coating, thus suggesting that ZnO-coated SnSe by ALD can be considered to improve the thermoelectric device performance.

show abstract

Modifying carbon fiber fabric for flexible thermoelectric energy conversion

Shi¹,

Chen²,

Zhang³

et al. 2023

Applied Surface Science

View full text Add to dashboard Cite

Atomic layer deposition of ZnO layers on Bi2Te3 powders: Comparison of gas fluidization and rotary reactors

Cited by 5 publications

References 32 publications

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Schottky Contacts to ZnO-Nanocoated SnSe Powders by Atomic Layer Deposition

Modifying carbon fiber fabric for flexible thermoelectric energy conversion

Contact Info

Product

Resources

About

Atomic layer deposition of ZnO layers on Bi2Te3 powders: Comparison of gas fluidization and rotary reactors

Cited by 5 publications

References 32 publications

Recent advances of electrodeposition of Bi2Te3and its thermoelectric applications in miniaturized power generation and cooling

Recent advances of electrodeposition of Bi2Te3and its thermoelectric applications in miniaturized power generation and cooling

Schottky Contacts to ZnO-Nanocoated SnSe Powders by Atomic Layer Deposition

Modifying carbon fiber fabric for flexible thermoelectric energy conversion

Contact Info

Product

Resources

About

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling

Recent advances of electrodeposition of Bi₂Te₃and its thermoelectric applications in miniaturized power generation and cooling