Abdul Basit

The Hong Kong Polytechnic University | PolyU · Department of Applied Physics

The interface energy level alignment modulation and charge carrier transportation play an important role in the device performance of perovskite solar cells (PSCs). Herein, tailored hydrophobic metal‐organic frameworks (MOFs) are employed as interfacial layers between perovskite absorbers and hole transport layers (HTLs). The tailored MOFs feature...

Lead‐free polycrystalline manganese telluride holds great potential in the development of waste heat recovery due to its fascinating physical properties. However, the poor thermoelectric (TE) performance in the p‐type MnTe alloys always results from their inferior carrier concentration, leading to low power factor and high thermal conductivity whic...

As a group of emerging liquid‐like thermoelectric materials for waste heat recovery into useful energy, di‐chalcogenides Cu 2 (S, Se, Te) have been considered as superionic thermoelectric materials. Due to their highly disordered degree of Cu‐ion in the crystal lattice, Cu 2 (S, Se, Te) compounds can exhibit ultralow thermal conductivity, and in th...

Thermoelectric technology can directly harvest the waste heat into electricity, which is a promising field of green and sustainable energy. In this aspect, flexible thermoelectrics (FTE) such as wearable fabrics, smart biosensing, and biomedical electronics offer a variety of applications. Since the nanofibers are one of the important constructions...

Lead‐free chalcogenide SnTe has been demonstrated to be an efficient medium temperature thermoelectric (TE) material. However, high intrinsic Sn vacancies as well as high thermal conductivity devalue its performance. Here, β‐Zn4Sb3 is incorporated into the SnTe matrix to regulate the thermoelectric performance of SnTe. Sequential in situ reactions...

SnTe is a promising alternative of the moderate-temperature thermoelectric material PbTe owing to its earth-abundant and nontoxic nature. However, its several shortcomings, such as small Seebeck coefficient thus poor power factor and upper lattice thermal conductivity, which have restricted overall thermoelectric performance of SnTe. In this scenar...

In this work, a dual-site electronic doping with Sb and I in SnTe has been carried out and the impact of co-doping on the electrical and thermal transport properties has been studied in detail. Due to the electron donation effect, the excessive hole density has been reduced, and the Seebeck coefficient (S) have been increased effectively. Moreover,...

Pb-free MnTe has recently been discovered to be a promising thermoelectric material because of its low toxicity and eco-friendly nature. Here, we have proposed and demonstrated an effective approach to boost the electrical transport of MnTe compound via reinforcing bond covalency through M/S (alkaline dopants M = Li, Na, and K) co-doping. By means...

In this work, earth abundant CaI2 compound has been applied to regulate the thermoelectric performance of SnTe by co-doping in both the anion and cation sites for the first time. The carrier concentration has been effectively tuned to a reasonable range due to the electron doner nature of ITe+ point defects; on the other hand, the Seebeck coefficie...

α-MgAgSb (α-MAS) has recently been discovered to be a promising p-type thermoelectric (TE) material owing to its earth-abundant and nontoxic nature. However, However, there are two main disadvantages hindered the large-scale application of α-MAS,one is the single α-MAS phase prepared by conventional method requires for an extended period of time, a...

Here, the intellectual challenges for thermoelectric materials revolves around the strategy of point defect engineering to regulate the electrical and thermal transport nature of Mn1.06-xSnxTe (x = 0, 0.03, 0.035, 0.04, 0.045) materials. The power factor increases with substitution of Sn into the lattice of Mn1.06Te leading to enhance the carrier c...

It is reported that MnTe doped with p-type Sb2Te3 shows an encouraging thermoelectric performance at elevated temperatures as in MnTe + x at% Sb2Te3 samples (x=0, 0. 5, 1, 1.5, 2) samples. After simultaneous introduction of holes, the Fermi level of MnTe shifts toward the valence band, which resulting the improved electrical performance. Whereas th...

In this work, we demonstrate a synergistic approach to improve the thermoelectric performance of InSb compound by introducing a replacement reaction of InSb and TiO2 during the hot pressed process. As a consequence of the replacement reaction, TiIn+ point defects, In2O3, stacking faults and InSb-Sb eutectic structures have been introduced into the...

In this work, the co-doping in both the anion and cation sites of SnTe has been implemented by addition of BiCl3 and the effect of co-doping on thermoelectric performance of SnTe-based materials has been studied detailedly. Benefitting from the sharp reduction of carrier concentration and the increase of density of states due to the electron donor...

The effect of Al-, Ga- and In- doping on the thermoelectric (TE) properties of Cu3SbSe4 has been comparatively studied on the basis of theoretical prediction and experimental validation. It is found that tiny Al/Ga/In substitution leads to a great enhancement of electrical conductivity with high carrier concentration and also large Seebeck coeffici...

It is a challenge to optimize the coupled electrical and thermal transport properties of a thermoelectric material simultaneously. Here, the enhancement of overall thermoelectric properties in Cu3SbSe4 has been demonstrated through Te substitution. The results display that the simultaneous optimization of the Seebeck coefficient, electrical conduct...

Owing to the advantage of low thermal conductivity, large Seebeck coefficient and multiple eco-friendly components constitution, Cu 2 CoSnS 4 (CCTS) might be a promising thermoelectric material. DFT calculations reveal that the multiple valence bands can be utilized to obtain an enhanced Seebeck coefficient and an improved power factor, and the rel...

We report the structural, electronic, optical, and thermoelectric properties of the five cubic alkali-earth transition-metals AZn13 (A-Na, K, Ca, Sr, Ba) using density functional theory. Structural properties, electronic structures and optical behaviors are calculated explicitly via highly accurate contemporary full potential-linearized augmented p...

Different exchange correlation potential approximations are used to examine electronic, optical, and thermoelectric properties of XNMg3(X=P, As, Sb, and Bi) antiperovskite compounds. Band structures of the compounds are direct in nature. Within a high-energy range (2–6 eV), these materials exhibit maximum levels of optical conductivity, and these m...