-
采用分子束外延技术生长GaAs/AlAs三量子阱,并在中间的GaAs阱中δ-掺杂浅受主杂质Be原子,制作出量子限制受主远红外Teraherz原型电致发光器件.实验上测量得到4.5 K时器件的电致发光谱(EL)和电传输特性(I-V曲线).在EL发射谱中清楚地观察到222 cm-1处宽的尖峰,这来源于Be受主奇宇称激发态到其基态的辐射跃迁,而非辐射弛豫过程则使发射谱的信号很弱.另外在I-V曲线中072和186 V的位置出现两个共振隧道贯穿现象,分别对应于中间δ-掺杂量子阱受主能级1s3/2(Γ6+Γ7)到左边非掺GaAs量子阱中HH带,及右边非掺杂GaAs量子阱中HH重空穴带到中间掺杂GaAs量子阱中Be受主杂质原子奇宇称激发态2p5/2(Γ6+Γ7)能级的共振隧穿.
-
关键词:
- 量子限制效应 /
- 电致发光 /
- 共振隧穿效应 /
- δ-掺杂GaAs/AlAs三量子阱
GaAs/AlAs triple-quantum-well samples were grown by molecular beam epitaxy, and the middle GaAs quantum-well layer was delta-doped at the well centre with Be shallow acceptors. Then the far-infrared Teraherz prototype emitter was fabricated using the samples. Electroluminescence (EL) and current-voltage characteristics (I-V) were measured at 4.5 K. In the EL spectrum, a wide peak was observed clear 222 cm-1, which is attributed to the Be acceptor’s radiative transitions from the excited odd-parity states to the ground state. Nevertheless, the emission signal was weakened by non-radiative relaxation processes. In the I-V curve, the negative differential resistance characteristic at the position of 0.72 and 1.86 V was also observed clearly. This is attributed to the resonant tunneling between Be acceptor 1s3/2(Γ6+Γ7) energy level in the middle quantum-well and the HH1 band in the left-side non-doping quantum-well, as well as the resonant tunneling between the HH band in the right-side non-doping quantum-well and Be acceptor 2p5/2(Γ6+Γ7) energy level.-
Keywords:
- quantum confinement /
- electroluminescence /
- resonant tunneling effect /
- delta-doped GaAs/AlAs quantum wells
[1] [1]Ma S H, Shi Y L, Xu X L, Yan W, Yang Y P, Wang L 2006 Acta Phys. Sin. 55 4091 (in Chinese) [马士华、施宇蕾、徐新龙、严伟、杨玉平、汪力 2006 55 4091]
[2] [2]Zhang X B, Shi W 2008 Acta Phys. Sin. 57 4984 (in Chinese) [张显斌、施卫 2008 57 4984]
[3] [3]Lafaye D G, Boucaud P, Julien F H, Prazeres R, Glotin F, Ortega J M, Thierry-Mieg V, Planel R 1997 Appl. Phys. Lett. 70 3197
[4] [4]Muravjov A V, Withers S H, Pavlov S G, Shastin V N, Peale R E 1999 J. Appl. Phys. 86 3512
[5] [5]Zhang T Y, Zhao W 2008 Chin. Phys. B 17 4285
[6] [6]Xu G Y, Li A Z 2007 Acta Phys. Sin. 56 500 (in Chinese) [徐刚毅、李爱珍 2007 56 500]
[7] [7]Lin G J, Zhou Z W, Lai H K, Li C, Chen S Y, Yu J Z 2007 Acta Phys. Sin. 56 4137 (in Chinese) [林桂江、周志文、赖虹凯、李成、陈松岩、余金中 2007 56 4137]
[8] [8]Ting D Z, Chang Y C, Bandara S V, Gunapala S D 2007 Appl. Phys. Lett. 91 073510
[9] [9]MujagiDc' E, Austerer M, Schartner S, Nobile M, Hoffmann L K, Schrenk W, Strasser G, Semtsiv M P, Bayrakli I, Wienold M, Masselink W T 2008 J. Appl. Phys. 103 033104
[10] ]Williams B S, Callebaut H, Kumar S, Hu Q, Reno J L 2003 Appl. Phys. Lett. 82 1015
[11] ]Harrison P, Halsall M P, Zheng W M 2002 Mater. Sci. Forum 384—385 165
[12] ]Harrison P, Kelsall R W 1997 J. Appl. Phys. 81 7135
[13] ]Halsall M P, Harrison P, Wells J P R, Bradley I V, Pellemans H 2001 Phys. Rev. B 63 155314
[14] ]Zheng W M, Halsall M P, Harmer P, Harrison P, Steer M J 2002 J. Appl. Phys. 92 6039
[15] ]Orlova E E, Harrison P, Zhang W M, Halsall M P 2005 Semiconductors 39 67
[16] ]Zheng W M, Halsall M P, Harmer P, Harrison P, Steer M J 2004 Appl. Phys. Lett. 84 735
[17] ]Seliuta D, ACˇUechaviDcˇius B, Kavaliauskas J, Krivaite G, Grigelionis I, Balakauskas S, ValuDsˇis G, Sherliker B, Sherliker B, Halsall M P, Lachab M, Khanna S P, Harrison P, Linfieldc E H 2008 Acta Phys. Pol. A 113 909
[18] ]Huber R, Kaindl R A, Schmid B A, Chemla D S 2005 Phys. Rev. B 72 161314
[19] ]ACˇUechaviDcˇius B, Kavaliauskas J, Krivaite· G, Seliuta D, ValuDsˇis G, Halsall M P, Steer M J, Harrison P 2005 J. Appl. Phys. 98 023508
[20] ]ACˇUechaviDcˇius B, Kavaliauskas J, Krivaite· G, Seliuta D, ASˇUirmulis E, Devenson J, ValuAsˇis G, Sherliker B, Halsall M P, Steer M J, Harrison P 2005 Acta Phys. Pol. A 107 328
[21] ]Kundrotas J, ACˇUerDsˇkus A, ValuDsˇis G, Lachab M, Khanna S P, Harrison P, Linfield E H 2008 J. Appl. Phys. 103 123108
[22] ]Holtz P O, Sundaram M, Doughty K, Merz J L, Gossard A C 1989 Phys. Rev. B 40 12338
[23] ]Missous M 1995 J. Appl. Phys. 78 4467
[24] ]Zheng W M, Halsall M P, Harrison P, Steer M J 2006 Sci. China Ser. G 49 702
[25] ]Masselink W T, Chung C Y, Morkoc H 1985 Phys.Rev. B 32 5190
[26] ]Zheng W M, Halsall M P, Harrison P, Wells J P R, Bradley I V, Steer M J 2003 Appl. Phys. Lett. 83 3719
[27] ]Reeder A A, McCombe B D, Chambers F A, Devane G P 1988 Phys. Rev. B 38 4318
[28] ]Xia J B, Huang K 1988 Acta Phys. Sin. 37 1 (in Chinese) [夏建白、黄昆 1988 37 1]
-
[1] [1]Ma S H, Shi Y L, Xu X L, Yan W, Yang Y P, Wang L 2006 Acta Phys. Sin. 55 4091 (in Chinese) [马士华、施宇蕾、徐新龙、严伟、杨玉平、汪力 2006 55 4091]
[2] [2]Zhang X B, Shi W 2008 Acta Phys. Sin. 57 4984 (in Chinese) [张显斌、施卫 2008 57 4984]
[3] [3]Lafaye D G, Boucaud P, Julien F H, Prazeres R, Glotin F, Ortega J M, Thierry-Mieg V, Planel R 1997 Appl. Phys. Lett. 70 3197
[4] [4]Muravjov A V, Withers S H, Pavlov S G, Shastin V N, Peale R E 1999 J. Appl. Phys. 86 3512
[5] [5]Zhang T Y, Zhao W 2008 Chin. Phys. B 17 4285
[6] [6]Xu G Y, Li A Z 2007 Acta Phys. Sin. 56 500 (in Chinese) [徐刚毅、李爱珍 2007 56 500]
[7] [7]Lin G J, Zhou Z W, Lai H K, Li C, Chen S Y, Yu J Z 2007 Acta Phys. Sin. 56 4137 (in Chinese) [林桂江、周志文、赖虹凯、李成、陈松岩、余金中 2007 56 4137]
[8] [8]Ting D Z, Chang Y C, Bandara S V, Gunapala S D 2007 Appl. Phys. Lett. 91 073510
[9] [9]MujagiDc' E, Austerer M, Schartner S, Nobile M, Hoffmann L K, Schrenk W, Strasser G, Semtsiv M P, Bayrakli I, Wienold M, Masselink W T 2008 J. Appl. Phys. 103 033104
[10] ]Williams B S, Callebaut H, Kumar S, Hu Q, Reno J L 2003 Appl. Phys. Lett. 82 1015
[11] ]Harrison P, Halsall M P, Zheng W M 2002 Mater. Sci. Forum 384—385 165
[12] ]Harrison P, Kelsall R W 1997 J. Appl. Phys. 81 7135
[13] ]Halsall M P, Harrison P, Wells J P R, Bradley I V, Pellemans H 2001 Phys. Rev. B 63 155314
[14] ]Zheng W M, Halsall M P, Harmer P, Harrison P, Steer M J 2002 J. Appl. Phys. 92 6039
[15] ]Orlova E E, Harrison P, Zhang W M, Halsall M P 2005 Semiconductors 39 67
[16] ]Zheng W M, Halsall M P, Harmer P, Harrison P, Steer M J 2004 Appl. Phys. Lett. 84 735
[17] ]Seliuta D, ACˇUechaviDcˇius B, Kavaliauskas J, Krivaite G, Grigelionis I, Balakauskas S, ValuDsˇis G, Sherliker B, Sherliker B, Halsall M P, Lachab M, Khanna S P, Harrison P, Linfieldc E H 2008 Acta Phys. Pol. A 113 909
[18] ]Huber R, Kaindl R A, Schmid B A, Chemla D S 2005 Phys. Rev. B 72 161314
[19] ]ACˇUechaviDcˇius B, Kavaliauskas J, Krivaite· G, Seliuta D, ValuDsˇis G, Halsall M P, Steer M J, Harrison P 2005 J. Appl. Phys. 98 023508
[20] ]ACˇUechaviDcˇius B, Kavaliauskas J, Krivaite· G, Seliuta D, ASˇUirmulis E, Devenson J, ValuAsˇis G, Sherliker B, Halsall M P, Steer M J, Harrison P 2005 Acta Phys. Pol. A 107 328
[21] ]Kundrotas J, ACˇUerDsˇkus A, ValuDsˇis G, Lachab M, Khanna S P, Harrison P, Linfield E H 2008 J. Appl. Phys. 103 123108
[22] ]Holtz P O, Sundaram M, Doughty K, Merz J L, Gossard A C 1989 Phys. Rev. B 40 12338
[23] ]Missous M 1995 J. Appl. Phys. 78 4467
[24] ]Zheng W M, Halsall M P, Harrison P, Steer M J 2006 Sci. China Ser. G 49 702
[25] ]Masselink W T, Chung C Y, Morkoc H 1985 Phys.Rev. B 32 5190
[26] ]Zheng W M, Halsall M P, Harrison P, Wells J P R, Bradley I V, Steer M J 2003 Appl. Phys. Lett. 83 3719
[27] ]Reeder A A, McCombe B D, Chambers F A, Devane G P 1988 Phys. Rev. B 38 4318
[28] ]Xia J B, Huang K 1988 Acta Phys. Sin. 37 1 (in Chinese) [夏建白、黄昆 1988 37 1]
计量
- 文章访问数: 8986
- PDF下载量: 1198
- 被引次数: 0