Investigation of a novel intermediate band photovoltaic material with wide spectrum solar absorption based on Ti-substituted CuGaS2

Theoretical Design of the Absorber for Intermediate Band Solar Cells from Group‐IV (Si, Ge, and Sn)‐Doped AgAlSe2

“…The ideal widths of the host material for the IBSC are 2.40 and 1.93 eV at 1 sun and full concentration, respectively. As the host materials for the IBSC, many wide gap semiconductors such as III–V, II–VI, spinel and chalcopyrite compounds have been studied and explored.…”

“…Owing to the success of chalcopyrite Cu(In,Ga)Se 2 and its cousin Cu 2 ZnSn(S,Se) 4 on the single band gap solar cells, Cu‐based chalcopyrite compounds have been paid much attention as the host for IBSC, for instances, Fe, Cr, Ti, Ge, and Sn doped CuGaS 2 , Ce and Ti doped CuInS 2 , Sn‐doped CuAlS 2 , etc. In order to realize the three‐photon absorption effectively, the intermediate band need to meet two requirements: delocalized and half‐filled .…”

Double‐Pulse Electrodeposition of CuGaS2 Photovoltaic Thin Film

“…Raman spectra of the non‐pulsed deposited film and the double pulsed electrodeposited films show a band with frequency near 310 cm −1 corresponding to the A 1 ‐mode which is the dominant Raman‐active mode in chalcopyrite . The A 1 mode has a pure anionic character and it is due to vibration of sulfur atoms, while the rest of the atoms are stationary …”

Enhanced performance of solar cells via anchoring CuGaS2 quantum dots

“…The chalcopyrite semiconductor quantum dots (QDs), such as CdS(Se) [13][14][15][16][17][18][19][20], PbS(Se) [21][22][23][24], SnSe 2 [25], InAs [26,27], Sb 2 S 3 [28], were introduced into QDSSCs as light-harvesting sensitizers via various methods. Since photons with lower energy could be absorbed, the chalcopyrite semiconductor QDs are considered as a promising candidate for the high-efficiency solar cells [29]. The reported semiconductor QDs in QDSSCs were mainly attributed to the binary semiconductor materials.…”

“…CuGaS 2 nanocrystals exhibit excellent activity in solar water splitting [42,43], biological and chemical sensing [44,45]. Ascribing to its wide band gap energy (2.2-2.5 eV) [46,47] corresponding to the green light region and direct transition [29,[48][49][50][51], CuGaS 2 nanocrystals could be an optimum candidate for the QDSSCs. However, very few studies on CuGaS 2 QDSSCs were reported.…”